4Preparata F P, Shamos M I. Computational Geometry: AnIntroduction [M], Berlin: Springer, 1985.
5O'Rourke J. Computational Geometry in C [M]. Cambridge:Cambridge University Press, 1985.
6Rivero M, Feito F R. Boolean operations on general planar polygons [J]. Computer & Graphics, 2000, 24(6): 881--896.
7Whitney H. Geometric Integration Theory [M]. Princeton,NJ: Princeton University Press, 1957.
8Ruiz J, de Miras, Feito F R. Inclusion test for curved-edged polygons [J]. Computers & Graphics, 1997, 21 (6) : 815824.
9Feito F, Rivero M L. Geometric modeling based on simplicial chains [J]. Computers & Graphics, 1998, 22(5): 611--619.
10Feito F, Rivero M L, Rueda A J. Boolean representations of general planar polygons [A]. In: Proceedings of the 7th International Conference in Central Europe on Computer Graphics, Visualization and Interactive Digital Media, Pilsen,1999. 87--92.