A multilevel graphics system based on top-down methodology. - Nadia Magnenat-Thalmann; Daniel Thalmann; André Larouche (Comput. Graph., 1982)

GRAFEDIT: An interactive general-purpose graphics editor. - Nadia Magnenat-Thalmann; Daniel Thalmann; André Larouche; Louis Lorrain (Comput. Graph., 1982)