Tim N. T. Goodman. Convexity of Bézier nets on triangulations. Computer Aided Geometric Design, 8(2):175-180, 1991. [doi]
@article{Goodman91a:0,
title = {Convexity of Bézier nets on triangulations},
author = {Tim N. T. Goodman},
year = {1991},
doi = {10.1016/0167-8396(91)90043-B},
url = {http://dx.doi.org/10.1016/0167-8396(91)90043-B},
researchr = {https://researchr.org/publication/Goodman91a%3A0},
cites = {0},
citedby = {0},
journal = {Computer Aided Geometric Design},
volume = {8},
number = {2},
pages = {175-180},
}