%0 Journal Article %A Le Suan Kan %T Construction of asymptotic quasiperiodic solutions for a~nonlinear system of second-order equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1980 %P 78-80 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1980_10_a14/ %G ru %F IVM_1980_10_a14