Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1965_161_1_a2, author = {A. M. Bukhvalov}, title = {An elementary method of separation of variables in equations of several variables}, journal = {Doklady Akademii Nauk}, pages = {16--18}, publisher = {mathdoc}, volume = {161}, number = {1}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_161_1_a2/} }
A. M. Bukhvalov. An elementary method of separation of variables in equations of several variables. Doklady Akademii Nauk, Tome 161 (1965) no. 1, pp. 16-18. http://geodesic.mathdoc.fr/item/DAN_1965_161_1_a2/