@article{DAN_1995_341_4_a6,
     author = {A. P. Afanas'ev},
     title = {On a class of local variational problems with arbitrary},
     journal = {Doklady Akademii Nauk},
     pages = {460--462},
     year = {1995},
     volume = {341},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_341_4_a6/}
}