Elaine Cohen, Tom Lyche, Richard F. Riesenfeld. A B-spline-like basis for the Powell-Sabin 12-split based on simplex splines. Math. Comput., 82(283):1667-1707, 2013. [doi]
@article{CohenLR13,
title = {A B-spline-like basis for the Powell-Sabin 12-split based on simplex splines},
author = {Elaine Cohen and Tom Lyche and Richard F. Riesenfeld},
year = {2013},
doi = {10.1090/S0025-5718-2013-02664-6},
url = {http://dx.doi.org/10.1090/S0025-5718-2013-02664-6},
researchr = {https://researchr.org/publication/CohenLR13},
cites = {0},
citedby = {0},
journal = {Math. Comput.},
volume = {82},
number = {283},
pages = {1667-1707},
}