Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_2006_80_1_a10, author = {V. M. Savchin and S. A. Budochkina}, title = {On the {Existence} of a {Variational} {Principle}}, journal = {Matemati\v{c}eskie zametki}, pages = {87--94}, publisher = {mathdoc}, volume = {80}, number = {1}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_1_a10/} }
V. M. Savchin; S. A. Budochkina. On the Existence of a Variational Principle. Matematičeskie zametki, Tome 80 (2006) no. 1, pp. 87-94. http://geodesic.mathdoc.fr/item/MZM_2006_80_1_a10/