@inproceedings{inproceedingsf26da836,
title   = {MDE: a hypertext model for online courses},
author = {Leiva, Willie Dresler and Oliveira, Maria Cristina Ferreira de and Masiero, Paulo Cesar and Fortes, Renata Pontin de Mattos},
year = {2002},
publisher = {SBC},
booktitle   = {Brazilian Symposium on Multimedia and Hypermedia Systems}
}