Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1935_9_a5, author = {N. S. Koshlyakov}, title = {On a second-order partial differential equations}, journal = {Informatics and Automation}, pages = {189--200}, publisher = {mathdoc}, volume = {9}, year = {1935}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1935_9_a5/} }
N. S. Koshlyakov. On a second-order partial differential equations. Informatics and Automation, Travaux de l'Institut Math\'ematique Stekloff, Tome 9 (1935), pp. 189-200. http://geodesic.mathdoc.fr/item/TRSPY_1935_9_a5/