@article{DAN_1988_300_6_a0,
     author = {V. A. Bereznev and S. N. Zavriev and A. A. Tret'yakov},
     title = {The interconnection between {Lagrange's} theorem and the geometry of},
     journal = {Doklady Akademii Nauk},
     pages = {1289--1291},
     publisher = {mathdoc},
     volume = {300},
     number = {6},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_300_6_a0/}
}