TY - JOUR AU - G. I. Laptev TI - Mathematical features of the problem on the penetration of a~magnetic field into a~substance for quasistationary approximation JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1989 SP - 70 EP - 73 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1989_7_a12/ LA - ru ID - IVM_1989_7_a12 ER -