Penichet, V. M. R., Rodriguez, M. L., Lozano, M. D., Garrido, J. L., Gallud, J. A., Noguera, M., Tesoriero, R.and Hurtado, M. V. Extending and Supporting Featured User Interface Models for the Development of Groupware Applications. Journal of Universal Computer Science (J.UCS), Special issue on Human-Computer Interaction. ISSN: 0948-695X. Volume 14, Number 19, pp. 3053-3070, 2008.
Link: http://www.jucs.org/jucs_14_19/extending_and_supporting_featured