Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1970_192_1_a9, author = {L. S. Frank}, title = {Coercive boundary value problems for difference operators}, journal = {Doklady Akademii Nauk}, pages = {42--45}, publisher = {mathdoc}, volume = {192}, number = {1}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_192_1_a9/} }
L. S. Frank. Coercive boundary value problems for difference operators. Doklady Akademii Nauk, Tome 192 (1970) no. 1, pp. 42-45. http://geodesic.mathdoc.fr/item/DAN_1970_192_1_a9/