@article{IVM_1971_10_a5,
     author = {I. S. Kukles and L. B. Persidskaya},
     title = {Those characteristics of a~system of three differential equations that tend to the origin along a~spiral and have infinite order of curvature},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--46},
     publisher = {mathdoc},
     number = {10},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_10_a5/}
}