%0 Journal Article %A A. S. Kel'zon %A K. K. Malinovskii %A V. I. Yakovlev %T Effect of inhomogeneity of elastic field of supports on parametric oscillations of a rigid shaft %J Doklady Akademii Nauk %D 1970 %P 1263-1266 %V 193 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_193_6_a13/ %G ru %F DAN_1970_193_6_a13