TY - JOUR AU - A. G. Kartsatos TI - On conditions for a saddle point in the theory of perturbations of nonlinear maximally monotone operators in a Hilbert space JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1997 SP - 66 EP - 74 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1997_2_a5/ LA - ru ID - IVM_1997_2_a5 ER -