%0 Journal Article %A P. N. Vabishchevich %T Nonlocal perturbation of the initial value in ill-posed problems for the second order evolution equations %J Matematičeskoe modelirovanie %D 1992 %P 109-119 %V 4 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1992_4_5_a9/ %G ru %F MM_1992_4_5_a9