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

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.