TY - JOUR AU - P. V. Kerekesha TI - Certain spatial problems of elasticity theory that lead to the Riemann problem JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1970 SP - 59 EP - 66 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1970_8_a7/ LA - ru ID - IVM_1970_8_a7 ER -