Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1973_213_5_a14, author = {I. M. Koval'chik}, title = {Conditions for the solvability of linear equations in a function space}, journal = {Doklady Akademii Nauk}, pages = {1051--1054}, publisher = {mathdoc}, volume = {213}, number = {5}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_213_5_a14/} }
I. M. Koval'chik. Conditions for the solvability of linear equations in a function space. Doklady Akademii Nauk, Tome 213 (1973) no. 5, pp. 1051-1054. http://geodesic.mathdoc.fr/item/DAN_1973_213_5_a14/