Yuan Cao, Xuan-ji Hua. The convexity of quadratic parametic triangular Bernstein-Bézier surfaces. Computer Aided Geometric Design, 8(1):1-6, 1991. [doi]
@article{CaoH91,
title = {The convexity of quadratic parametic triangular Bernstein-Bézier surfaces},
author = {Yuan Cao and Xuan-ji Hua},
year = {1991},
doi = {10.1016/0167-8396(91)90045-D},
url = {http://dx.doi.org/10.1016/0167-8396(91)90045-D},
researchr = {https://researchr.org/publication/CaoH91},
cites = {0},
citedby = {0},
journal = {Computer Aided Geometric Design},
volume = {8},
number = {1},
pages = {1-6},
}