@article{IVM_1968_11_a4,
     author = {A. N. Veissenberg},
     title = {A~transformation of the system of differential equations of a~perturbed motion in the critical case with an even number of zero roots},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {41--47},
     year = {1968},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1968_11_a4/}
}