Charles T. Loop. Smooth spline surfaces over irregular meshes. In Proceedings of the 21st Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1994. pages 303-310, ACM, 1994. [doi]
@inproceedings{Loop94, title = {Smooth spline surfaces over irregular meshes}, author = {Charles T. Loop}, year = {1994}, doi = {10.1145/192161.192238}, url = {http://doi.acm.org/10.1145/192161.192238}, researchr = {https://researchr.org/publication/Loop94}, cites = {0}, citedby = {0}, pages = {303-310}, booktitle = {Proceedings of the 21st Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1994}, publisher = {ACM}, isbn = {0-89791-667-0}, }