@article{ZVMMF_1977_17_2_a6,
     author = {V. I. Lebedev},
     title = {Zolotarev's problem in the method of variable directions},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {349--366},
     year = {1977},
     volume = {17},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1977_17_2_a6/}
}