@article{INTD_1973_1_a1,
     author = {A. T. Fomenko},
     title = {Geometric variational problems},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya},
     pages = {39--60},
     publisher = {mathdoc},
     volume = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTD_1973_1_a1/}
}