Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1975_11_8_a13, author = {H. Sh. Pham}, title = {The support principle in discrete processes}, journal = {Differencialʹnye uravneni\^a}, pages = {1485--1496}, publisher = {mathdoc}, volume = {11}, number = {8}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_8_a13/} }
H. Sh. Pham. The support principle in discrete processes. Differencialʹnye uravneniâ, Tome 11 (1975) no. 8, pp. 1485-1496. http://geodesic.mathdoc.fr/item/DE_1975_11_8_a13/