Issue No. 07 - September (1982 vol. 2)
M. Mantyla , Helsinki University of Technology
In Helsinki, a Small but General Set of Manipulative Operations for Boundary Models of Solid Objects Has Been Used to Construct a Comprehensive Solid Modeling System.
M. Mantyla and R. Sulonen, "GWB: A Solid Modeler with Euler Operators," in IEEE Computer Graphics and Applications, vol. 2, no. , pp. 17-31, 1982.