ALIEN: A Prototype-Based Constraint System. - Eric Cournarie; Michel Beaudouin-Lafon (Workshops on Object-Oriented Graphics (1), 1991)

TicTacToon: a paperless system for professional 2D animation. - Jean-Daniel Fekete; Érick Bizouarn; Eric Cournarie; Thierry Galas; Frédéric Taillefer (SIGGRAPH, 1995)