Jianhua Fan, Jörg Peters. Smooth Bi-3 spline surfaces with fewest knots. Computer-Aided Design, 43(2):180-187, 2011. [doi]
@article{FanP11,
title = {Smooth Bi-3 spline surfaces with fewest knots},
author = {Jianhua Fan and Jörg Peters},
year = {2011},
doi = {10.1016/j.cad.2010.11.002},
url = {http://dx.doi.org/10.1016/j.cad.2010.11.002},
researchr = {https://researchr.org/publication/FanP11},
cites = {0},
citedby = {0},
journal = {Computer-Aided Design},
volume = {43},
number = {2},
pages = {180-187},
}