Rios, A., Pérez de la Cruz, J. L., & Conejo, R. (1998). SIETTE: Intelligent evaluation system using tests for TeleEducation. In Proc. of Workshop“ WWW-Based Tutoring” at 4th International Conference on Intelligent Tutoring Systems, San Antonio, TX.

Rios, A., Millán, E., Trella, M., Pérez-de-la-Cruz, J. L., & Conejo, R. (1999). Internet based evaluation system. Artificial Intelligence in Education: Open Learning Environments. IOS Press, Amsterdam, 387-394.

Conejo, R., Millán, E., Pérez-de-la-Cruz, J. L., & Trella, M. (2000, June). An empirical approach to on-line learning in SIETTE. In International Conference on Intelligent Tutoring Systems (pp. 605-614). Springer, Berlin, Heidelberg.

Benitez, R., Trella, M., & Conejo, R. (2000). Neural networks applied to item response theory. In Proceeding of the ICSC Symposia on Neural Computation (NC’2000) May (pp. 23-26).

Conejo,R. (2001) SIETTE: Sistema Inteligente de Evaluación mediante Test para TeleEducación, en: XII cursos de verano de la UNED Plasencia. Spain.

Arroyo, I., Conejo, R., Guzman, E., & Woolf, B. P. (2001, May). An adaptive web-based component for cognitive ability estimation. In Proc. of AI-ED (pp. 456-466).

Guzmán,E., & Conejo,R. (2001) El sistema de test adaptativos SIETTE, en: VII Congreso de Metodología de las Ciencias Sociales y de la Salud, Madrid (pp. 45-46).

Guzmán, E., & Conejo, R. (2002, June). Simultaneous evaluation of multiple topics in SIETTE. In International Conference on Intelligent Tutoring Systems (pp. 739-748). Springer, Berlin, Heidelberg.

Guzmán,E., Conejo,R. & Dominguez,F.J. (2002) Una herramienta de autor autónoma para un sistema de tests adaptativos a traves de Internet, III Congreso Internacional de Interacción Persona-Ordenador, Madrid (pp. 90-96).

Conejo,R. & Guzmán,E. (2002) SIETTE: Un sistema Inteligente de Evaluación mediante Test basado en la Teoría de Respuesta al Item, Metodologías de las Ciencias del Comportamiento. (pp. 133-137).

Guzmán, E., & Conejo, R. (2002, November). An adaptive assessment tool integrable into Internet-based learning systems. In International Conference on ICT in Education (pp. 139-143).

Carmona,C., Guzmán,E., Bueno, D., & Conejo,R. (2002) An adaptive web-based Tutorial of Agrarian Economy, in: P.Brusilovsky, N.Henze, E.Millan (eds.) Workshop on Adaptive Systems for web based education (AH2002), Málaga, Spain (2002) 57-63.

Guzmán,E., Riveros, J.A., & Conejo,R. A library for items construction in an adaptive evaluation system, in: V. Shute & E.A. Graf (eds.) Evidence Centered Design (ECD) approach to creating diagnostic e-assesments, San Sebastian (pp. 78-86).

Guzmán,E., Conejo,R., Hontangas,P., Olea, J. & Ponsoda, V. (2002) A Comparative Study of IRT and Classical Item Parameter Estimates Web-Based and Conventional Test Administration in: International Test Commision's Conference on Computer-Based Testing and the Internet, Winchester England.

Conejo, R., Guzman, E., & Perez-de-la-Cruz, J. L. (2003). Towards a computational theory of learning in an adaptive testing environment. In Proceedings of AIED (Vol. 3, pp. 398-400).

Guzmán,E. & Conejo,R. (2003) A web-based environment of Computerized Adaptive Test, in: CAL'03 21st Century Learning, Belfast, (pp. 73-73).

Conejo, R., Guzmán, E., Millán, E., Trella, M., Pérez-De-La-Cruz, J. L., & Ríos, A. (2004). SIETTE: A web-based tool for adaptive testing. International Journal of Artificial Intelligence in Education, 14(1), 29-61.

Guzmán, E., & Conejo, R. (2004, August). A brief introduction to the new architecture of SIETTE. In International Conference on Adaptive Hypermedia and Adaptive Web-Based Systems (pp. 405-408). Springer, Berlin, Heidelberg.

Guzmán,E., & Conejo,R. (2004) A model for student Knowledge Diagnosis through adaptive testing, in: Lester,J., Vicari,R.M., & Paraguaçu F. (Eds.), Intelligent Tutoring Systems. 7th International Conference, ITS 2004. Lecture Notes in Computer Science 3220, (pp. 12-21) Springer-Verlag, Berlin, Heidelberg.

Guzmán, E., & Conejo, R. (2004). A library of templates for exercise construction in an adaptive assessment system. Technology, Instruction, Cognition and Learning, 2, 21-60.

Guzmán, E., & Conejo, R. (2004). Un modelo de evaluación cognitiva basado en Tests Adaptativos Informatizados para el diagnóstico en Sistemas Tutores Inteligentes, en: Muñoz J. & Joya G.(eds.) I Simposio de la Red Andaluza de Tecnologías de Sistemas Inteligentes (ISTANET), Málaga.

Conejo, R., Guzmán, E., Pérez-de-la-Cruz, J. L., & Millán, E. (2005, May). Introducing adaptive assistance in adaptive testing. In AIED (pp. 777-779).

Pérez-de-la-Cruz,J.L., Conejo, R., & Guzmán, E. (2005) Qualitative and Quantitative Student Models, in: Chen-Kit Looi, Gord McCalla, Bert Bredeweg, Joost Breuker (Eds.), Artificial Intelligence in Education: Supporting Learning through Intelligent and Socially Informed Technology. (pp. 531-538). IOS Press, Amsterdam.

Guzmán, E., & Conejo, R. (2005). Self-assessment in a feasible, adaptive web-based testing system. IEEE transactions on Education, 48(4), 688-695.

Guzmán, E., & Conejo, R. (2005). Towards Efficient Item Calibration in adaptive testing, in: L. Ardisono, P. Brna, A. Mitrovic (Eds.), User Modelling 2005. 10th International Conference UM2005. Lecture Notes in Artificial Intelligence 3538, Springer-Verlag, Berlin/Heidelberg, 402-406.

Guzmán, E., Conejo, R., & García-Hervás, E. (2005). An authoring environment for adaptive testing. Journal of Educational Technology & Society, 8(3), 66-76.

Conejo,R., Guzmán,E. Pérez-de-la-Cruz, J.L., & Millán,E. (2005). Evaluacion empirica de una propuesta para la administracion inteligente de pistas en tests adaptativos, en: M. Lama, E.Sanchez (eds.) Actas del Taller Técnicas de la Inteligencia Artificial Aplicadas a la Educación (pp. 59-68).

Conejo, R., Guzmán, E., Perez-de-la Cruz, J.L., & Millán, E. (2006, June). An empirical study about calibration of adaptive hints in web-based adaptive testing environments. In V. Wade, H.Ashman, B.Smyth (Eds.), International Conference on Adaptive Hypermedia and Adaptive Web-Based Systems (pp. 71-80). Lecture Notes in Computer Science 4018, Springer, Berlin, Heidelberg.

Barros,B. Conejo,R. & Guzmán,E. (2007) Measuring the effect of collaboration in an assessment environment, In Luckin, R.M. (ed.) Artificial intelligence in education: Building technology rich learning contexts that work, IOS Press, Netherlands, 375-382.

Guzmán, E., Conejo, R., & Pérez-de-la-Cruz, J. L. (2007). Adaptive testing for hierarchical student models. User Modeling and User-Adapted Interaction, 17(1), 119-157.

Guzmán, E., Conejo, R., & Pérez-de-la-Cruz, J. L. (2007). Improving student performance using self-assessment tests. IEEE Intelligent Systems, 22(4), 46-52.

Conejo, R., Guzmán, E., Pérez-de-la-Cruz, J. L., & Millán, E. (2007). Estudio de un mecanismo para la administración adaptativa de ayudas en la realización de tests. Inteligencia Artificial. Revista Iberoamericana de Inteligencia Artificial, 11(33), 13-23.

Conejo, R., Barros, B., Guzmán, E., & Gálvez, J. (2008). Formative evaluation of the SIETTE collaborative testing environment. In Tai-Wai Chan, et al. (eds.) Proceedings of the 16th International Conference on Computer in Education, ICCE08 (pp. 297-301).

Galvez, J., Guzmán, E., & Conejo, R. (2008, July). A SOA-Based Framework for Constructing Problem Solving Environments. In P.Diaz, Kinshuk, I.Aedo,E.Mora (eds.) Eighth IEEE International Conference on Advanced Learning Technologies (pp. 126-127). IEEE. Los Alamitos, California.

Conejo, R., de los Riscos, E. G., & de la Cruz, J. P. (2008). Un estudio sobre la dificultad de los ítems en los tests de Informática. Actas de las XIV Jornadas de Enseñanza Universitaria de Informática, Jenui, 249-256.

Gálvez, J., Guzmán, E., & Conejo, R. (2009). A blended E-learning experience in a course of object oriented programming fundamentals. Knowledge-Based Systems, 22(4), 279-286.

Galvez, J., Guzman, E., Conejo, R., & Millán, E. (2009, July). Student Knowledge Diagnosis Using Item Response Theory and Constraint-Based Modeling. in: Dimitrova,V., Mizogouchi, R., du Boulay, B. (eds.) AIED - Building Learning Systems that care: From Knowledge Representation to Affective Modelling, (pp. 291-298) Brighton, UK.

Conejo, R., Barros, B., Guzman, E., & Galvez, J. (2009, July). An experiment to measure learning in a collaborative assessment environment. in: Dimitrova,V., Mizogouchi, R., du Boulay, B. (eds.) AIED - Building Learning Systems that care: From Knowledge Representation to Affective Modelling, (pp. 620-623) Brighton, UK.

Conejo, R., Barros, B., Guzman, E., & Galvez, J. (2009, July). Collaborative assessment with SIETTE in: Dimitrova,V., Mizogouchi, R., du Boulay, B. (eds.) AIED - Building Learning Systems that care: From Knowledge Representation to Affective Modelling, (pp. 799-799) Brighton, UK.

Gálvez, J., Guzmán, E., & Conejo, R. (2009) Inferencia estadística del conocimiento del alumno en entornos de evaluación basados en actividades procedimentales no acotadas. en: CAEPIA-2009, Sevilla (pp. 391-400).

Gálvez, J., Guzmán, E., & Conejo, R. (2009, November). Data-driven student knowledge assessment through ill-defined procedural tasks. In Conference of the Spanish Association for Artificial Intelligence (pp. 233-241). Springer, Berlin, Heidelberg.

Guzmán, E., Conejo, R., & Gálvez, J. (2010, June). A data-driven technique for misconception elicitation. In International Conference on User Modeling, Adaptation, and Personalization (pp. 243-254). Springer, Berlin, Heidelberg.

Galvez, J., Guzman, E., & Conejo, R. (2012, June). Exploring quality of constraints for assessment in problem solving environments. In International Conference on Intelligent Tutoring Systems (pp. 310-319). Springer, Berlin, Heidelberg.

Conejo, R., Trella, M., Cruces, I., & Garcia, R. (2011, July). INGRID: A web service tool for hierarchical open learner model visualization. In International conference on user modeling, adaptation, and personalization. (pp. 406-409). Springer, Berlin, Heidelberg.

Garcia-Viñas, J. I., Conejo, R., Gastón-González, A., López-Leiva, C., & Ropero-Hinojosa, C. (2013). La plataforma siette una herramienta para el aprendizaje de la botánica forestal. In: 6º Congreso Forestal Español. Sociedad Española de Ciencias Forestales. Vitoria-Gasteiz. Spain.

Conejo, R., Barros, B., Guzmán, E., & Garcia-Viñas, J. I. (2013). A web based collaborative testing environment. Computers & Education, 68, 440-457.

Gálvez, J., Conejo, R., & Guzmán, E. (2013). Statistical techniques to explore the quality of constraints in constraint-based modeling environments. International Journal of Artificial Intelligence in Education, 23(1), 22-49.

Conejo, R., Perez de la Cruz, J. L., Barros-Blanco, B., Galvez, J., & Garcia-Viñas, J. I. (2013). Context-aware Assessment Using QR-codes. In Proceedings of the Research in Engineering Education Symposium Kuala Lumpur.

Conejo, R., Guzmán, E., Perez-De-La-Cruz, J. L., & Barros, B. (2014). An empirical study on the quantitative notion of task difficulty. Expert Systems with Applications, 41(2), 594-606.

del Campo-Ávila, J., Conejo, R., Triguero, F., & Morales-Bueno, R. (2015). Mining web-based educational systems to predict student learning achievements. International Journal of Artificial Intelligence and Interactive Multimedia, 3(2), 49-54

Guzman, E. & Conejo, R. (2015). Measuring Misconceptions ThroughItem Response Theory. In: Conati, C., Heffernan, N., Mitrovic, A., Verdejo, M. (eds) Artificial Intelligence in Education. AIED 2015. Lecture Notes in Computer Science(), vol 9112. Springer.

Conejo, R., Guzmán, E., & Trella, M. (2016). The SIETTE automatic assessment environment. International Journal of Artificial Intelligence in Education, 26(1), 270-292.

Conejo, R., Garcia-Viñas, J. I., Gastón, A., & Barros, B. (2016). Technology-enhanced formative assessment of plant identification. Journal of Science Education and Technology, 25(2), 203-221.

Gálvez, J., Guzmán, E., Conejo, R., Mitrovic, A., & Mathews, M. (2016). Data calibration for statistical-based assessment in constraint-based tutors. Knowledge-based systems, 97, 11-23.

Letón, E., Molanes‐López, E. M., Luque, M., & Conejo, R. (2018). Video podcast and illustrated text feedback in a web‐based formative assessment environment. Computer Applications in Engineering Education, 26(2), 187-202.

Navarro, J. J., Mourgues-Codern, C., Guzmán, E., Rodríguez-Ortiz, I. R., Conejo, R., Sánchez-Gutiérrez, C., … & Saracostti, M. (2018). Integrating curriculum-based dynamic assessment in computerized adaptive testing: Development and predictive validity of the EDPL-BAI battery on reading competence. Frontiers in psychology, 9, 1492.

Conejo, R., Barros, B., & Bertoa, M. F. (2018, June). Measuring the quality of assessment using questions generated from the semantic web. In International Conference on Artificial Intelligence in Education (pp. 57-69). Springer.

Conejo, R., Barros, B., & Bertoa, M. F. (2019). Automated assessment of complex programming tasks using SIETTE. IEEE Transactions on Learning Technologies, 12(4), 470-484.

Mandow, L., del-Campo, J. D., Moreno-Vergara, N., & Onieva, J. A. (2020). La autoevaluación con la plataforma web SIETTE como estrategia de aprendizaje. In VII Jornadas Iberoamericanas de Innovación Educativa en el Ámbito de las TIC y las TAC Las Palmas de Gran Canaria.

Conejo, R., del Campo-Ávila, J., & Barros, B. (2022, July). First Steps Towards Automatic Question Generation and Assessment of LL (1) Grammars. In Artificial Intelligence in Education. Posters and Late Breaking Results, Workshops and Tutorials, Industry and Innovation Tracks, Practitioners’ and Doctoral Consortium: 23rd International Conference, AIED 2022, Durham, UK, July 27–31, 2022, Proceedings, Part II (pp. 271-275). Cham: Springer International Publishing.