@article{DAN_1965_160_3_a13,
     author = {I. Yu. Ryzhakov},
     title = {An analogue of a problem of {E.\,I.~Zolotarev}},
     journal = {Doklady Akademii Nauk},
     pages = {552--554},
     publisher = {mathdoc},
     volume = {160},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_3_a13/}
}