Beehive - An Internet Integrated Collaborative Learning Environment. - Carlos Zeve; José Valdeni de Lima; Eunice Polonia; Helena Sloczinski; Julio Nitzke (IEEE International Conference on Multimedia and Expo (II), 2000)

A Cooperative Environment for E-Learning Authoring. - Manuele Kirsch-Pinheiro; Tiago Lopes Telecken; Carlos Mario Dal Col Zeve; José Valdeni de Lima; Nina Edelweiss (Document Numérique, 2001)

Cooperative constructivist model for e-learning authoring using workflow technology. - Carlos Mario Dal Col Zeve (2003)