Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1991_27_1_a23, author = {Choi Sung Bong}, title = {The {Neumann} problem for the biharmonic equation}, journal = {Differencialʹnye uravneni\^a}, pages = {169--172}, publisher = {mathdoc}, volume = {27}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_1_a23/} }
Choi Sung Bong. The Neumann problem for the biharmonic equation. Differencialʹnye uravneniâ, Tome 27 (1991) no. 1, pp. 169-172. http://geodesic.mathdoc.fr/item/DE_1991_27_1_a23/