Juan Monterde, Hassan Ugail. On harmonic and biharmonic Bézier surfaces. Computer Aided Geometric Design, 21:697-715, 2004. [doi]
@article{MonterdeU04, title = {On harmonic and biharmonic Bézier surfaces}, author = {Juan Monterde and Hassan Ugail}, year = {2004}, doi = {10.1016/j.cagd.2004.07.003}, url = {http://dx.doi.org/10.1016/j.cagd.2004.07.003}, researchr = {https://researchr.org/publication/MonterdeU04}, cites = {0}, citedby = {0}, journal = {Computer Aided Geometric Design}, volume = {21}, pages = {697-715}, }