@article{02168647, title = {Eigenstructure of the equilateral triangle. III: The Robin problem.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2004}, year = {2004}, pages = {807-825}, doi = {10.1155/S0161171204306125}, zbl = {1123.35008}, language = {en}, url = {http://dml.mathdoc.fr/item/02168647} }
McCartin, Brian J. Eigenstructure of the equilateral triangle. III: The Robin problem.. International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 807-825. doi : 10.1155/S0161171204306125. http://gdmltest.u-ga.fr/item/02168647/