@article{DE_1974_10_9_a4,
     author = {I. T. Kiguradze},
     title = {Conditions for the conjugacy of the solutions of nonlinear ordinary differential {equations.~I,} {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1586--1594},
     publisher = {mathdoc},
     volume = {10},
     number = {9},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_9_a4/}
}