Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1977_11_1_a8, author = {M. M. Gekhtman and I. V. Stankevich}, title = {The generalized {Kronig--Penney} problem}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {61--62}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1977_11_1_a8/} }
M. M. Gekhtman; I. V. Stankevich. The generalized Kronig--Penney problem. Funkcionalʹnyj analiz i ego priloženiâ, Tome 11 (1977) no. 1, pp. 61-62. http://geodesic.mathdoc.fr/item/FAA_1977_11_1_a8/