%0 Journal Article
%A A. I. Bulgakov
%A L. I. Tkach
%T Perturbation of a~single-valued operator by a~multi-valued mapping of Hammerstein type with nonconvex images
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1999
%P 3-16
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1999_3_a0/
%G ru
%F IVM_1999_3_a0