Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1981_15_4_a16, author = {N. N. Frolov}, title = {Homeomorphism of {Hilbert} spaces induced by a differential operator}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {89--90}, publisher = {mathdoc}, volume = {15}, number = {4}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a16/} }
N. N. Frolov. Homeomorphism of Hilbert spaces induced by a differential operator. Funkcionalʹnyj analiz i ego priloženiâ, Tome 15 (1981) no. 4, pp. 89-90. http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a16/