@article{00770112, title = {On a generalization of the Keldysh theorem.}, journal = {Georgian Mathematical Journal}, volume = {2}, year = {1995}, pages = {291-297}, doi = {10.1007/BF02261702}, zbl = {0824.35039}, language = {en}, url = {http://dml.mathdoc.fr/item/00770112} }
Jaiani, G. On a generalization of the Keldysh theorem.. Georgian Mathematical Journal, Tome 2 (1995) pp. 291-297. doi : 10.1007/BF02261702. http://gdmltest.u-ga.fr/item/00770112/