%0 Journal Article %A I. S. Kukles %A L. B. Persidskaya %T Those characteristics of a~system of three differential equations that tend to the origin along a~spiral and have infinite order of curvature %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1971 %P 42-46 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1971_10_a5/ %G ru %F IVM_1971_10_a5