TY - JOUR AU - V. P. Rudakov TI - An effective bilateral estimate of the norms of the solutions of nonlinear perturbed systems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1970 SP - 78 EP - 83 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1970_12_a9/ LA - ru ID - IVM_1970_12_a9 ER -