@article{GDZPPN002042207, title = {Triangles III: Complex triangle functions.}, journal = {Aequationes mathematicae}, volume = {53}, year = {1997}, pages = {4-35}, zbl = {0868.51018}, url = {http://dml.mathdoc.fr/item/GDZPPN002042207} }
Lester, June A. Triangles III: Complex triangle functions.. Aequationes mathematicae, Tome 53 (1997) pp. 4-35. http://gdmltest.u-ga.fr/item/GDZPPN002042207/