%0 Journal Article %A A. A. Il'yushin %A Kh. Movlyankulov %A R. M. Sunchaliev %A A. N. Filatov %T Some methods of investigating nonlinear problems in the theory of viscoelasticity %J Doklady Akademii Nauk %D 1972 %P 59-61 %V 206 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1972_206_1_a14/ %G ru %F DAN_1972_206_1_a14