Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1974_219_4_a1, author = {B. A. Kats}, title = {A boundary-value problem with a nonhomeomorphic shift}, journal = {Doklady Akademii Nauk}, pages = {781--784}, publisher = {mathdoc}, volume = {219}, number = {4}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1974_219_4_a1/} }
B. A. Kats. A boundary-value problem with a nonhomeomorphic shift. Doklady Akademii Nauk, Tome 219 (1974) no. 4, pp. 781-784. http://geodesic.mathdoc.fr/item/DAN_1974_219_4_a1/