TY - JOUR AU - K. B. Sabitov AU - S. L. Khasanova TI - Spectral properties of a boundary value problem with a normal derivative in the boundary condition for equations of mixed type and their applications JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2003 SP - 64 EP - 76 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2003_6_a7/ LA - ru ID - IVM_2003_6_a7 ER -