Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1968_178_2_a13, author = {S. M. Shugrin}, title = {Difference schemes for symmetric differential equations}, journal = {Doklady Akademii Nauk}, pages = {311--313}, publisher = {mathdoc}, volume = {178}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_2_a13/} }
S. M. Shugrin. Difference schemes for symmetric differential equations. Doklady Akademii Nauk, Tome 178 (1968) no. 2, pp. 311-313. http://geodesic.mathdoc.fr/item/DAN_1968_178_2_a13/