@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/}
}