J. Lorente-pardo et al., Subharmonicity and convexity properties of Bernstein polynomials and Bezier nets on triangles, COMP AID G, 16(4), 1999, pp. 287-300
This paper is devoted to the comparison of various shape properties of tria
ngular Bezier surfaces and of their Bezier nets, such as polyhedral convexi
ty, axial convexity and subharmonicity. In order to better compare these pr
operties, the different notations used by different authors are unified. It
also includes counterexamples for the results that are not true. (C) 1999
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