1. J.M. Brun & M. Theron, “EUCLID-Langage Graphique Tridimensionnel”, Jounees graphiques de I’IRIA (1972)
2. I.C. Braid “Designing With Volumes”, PHD Thesis University of Cambridge (1973), 2nd Edition, Cantab Press (1974)
3. Y.J. Bernascon & J.M. Brun “Automated Aids for the Design of Mechanical Parts”, SME/ACM Congress, Chicago 1975
4. J.M. Brun et alii “EUCLID-Manuel de Référence”, Rapport LIMSI (1977) Université de Paris-Sud, 91400 ORSAY, France
5. H.B. Voelker, A.A.G. Requicha et alii “The PADL 1. 0/2 System For Defining and Diplaying Solid Objects”, ACM Computer Graphics, Vol.12, N°3 (1978), pp. 257–263