@article{1103043511, author = {Schiffer, M.}, title = {The Fredholm eigen values of plane domains.}, journal = {Pacific J. Math.}, volume = {7}, number = {4}, year = {1957}, pages = { 1187-1225}, language = {en}, url = {http://dml.mathdoc.fr/item/1103043511} }
Schiffer, M. The Fredholm eigen values of plane domains.. Pacific J. Math., Tome 7 (1957) no. 4, pp. 1187-1225. http://gdmltest.u-ga.fr/item/1103043511/