@article{IVM_1973_5_a8,
     author = {N. M. Onishchuk},
     title = {Certain questions on the centroaffine differential geometry of a~three-parameter family of plane elements},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {63--72},
     publisher = {mathdoc},
     number = {5},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1973_5_a8/}
}