F. Jurado, A.I. Molina, M.A. Redondo, M. Ortega, A. Giemza, L. Bollen, H.U. Hoppe: Learning to Program with COALA, a Distributed Computer Assisted Environment /jucs_15_7/learning_to_program_with
W.J. Giraldo, A.I. Molina, C.A. Collazos, M. Ortega, M.A. Redondo: Taxonomy for Integrating Models in the Development of Interactive Groupware Systems /jucs_14_19/taxonomy_for_integrating_models