TY - BOOK AU - Ansari,Hosein TI - Dirichlet problem for degenerate differential-operator equations of fourth order on infinite interval PY - 2013/// CY - Yerevan PB - Yerevan State University KW - Mathematic KW - Differential equations KW - Physic KW - Synopsis N1 - Supervisor: candidate of physical and mathematicl sciences L. P. Tepoyan ER -