@article{GDZPPN00206684X, title = {The geometry and spectrum of the one holed torus.}, journal = {Commentarii mathematici Helvetici}, volume = {63}, year = {1988}, pages = {259-274}, zbl = {0649.53028}, url = {http://dml.mathdoc.fr/item/GDZPPN00206684X} }
Buser, P.; Semmler, K.-D. The geometry and spectrum of the one holed torus.. Commentarii mathematici Helvetici, Tome 63 (1988) pp. 259-274. http://gdmltest.u-ga.fr/item/GDZPPN00206684X/