G. Cosmai, Umberto Cugini, Piero Mussio, Amri Napolitano. An interactive drafting system based on two dimensional primitives. In James S. Crabbe, Charles E. Radke, Hillel Ofek, editors, Proceedings of the 19th Design Automation Conference, DAC '82, Las Vegas, Nevada, USA, June 14-16, 1982. pages 521-529, ACM/IEEE, 1982. [doi]
Abstract is missing.