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@article{MZM_1978_24_5_a12, author = {\`E. \`E. Shnol'}, title = {Degeneracy in the simplest problem of variational calculus}, journal = {Matemati\v{c}eskie zametki}, pages = {707--716}, publisher = {mathdoc}, volume = {24}, number = {5}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_5_a12/} }
È. È. Shnol'. Degeneracy in the simplest problem of variational calculus. Matematičeskie zametki, Tome 24 (1978) no. 5, pp. 707-716. http://geodesic.mathdoc.fr/item/MZM_1978_24_5_a12/