TY - JOUR AU - S. I. Repin TI - On the approximation of solutions of variational problems in the theory of ideal plasticity JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1994 SP - 60 EP - 69 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1994_9_a6/ LA - ru ID - IVM_1994_9_a6 ER -