Gabriel Taubin. Is this a quadrisected mesh?. In Symposium on Solid Modeling and Applications. pages 261-266, 2001. [doi]
@inproceedings{Taubin01:0, title = {Is this a quadrisected mesh?}, author = {Gabriel Taubin}, year = {2001}, doi = {10.1145/376957.376987}, url = {http://doi.acm.org/10.1145/376957.376987}, researchr = {https://researchr.org/publication/Taubin01%3A0}, cites = {0}, citedby = {0}, pages = {261-266}, booktitle = {Symposium on Solid Modeling and Applications}, }