Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1962_145_2_a10, author = {V. K. Ivanov}, title = {On linear problems which are not well-posed}, journal = {Doklady Akademii Nauk}, pages = {270--272}, publisher = {mathdoc}, volume = {145}, number = {2}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_2_a10/} }
V. K. Ivanov. On linear problems which are not well-posed. Doklady Akademii Nauk, Tome 145 (1962) no. 2, pp. 270-272. http://geodesic.mathdoc.fr/item/DAN_1962_145_2_a10/