TY  - BOOK
AU  - Pahlevanyan,Avetik
TI  - On some problems of the Spectral Theory: (A.01.02- Differantial equation, mathematical physics) :Thesis in filfulment of the requirements for the degree of Candidate of Physical and Mathematical Sciences 
PY  - 2018///
CY  - Yerevan
PB  - [s.n.]
KW  - Mathematical Physics
KW  - Thesis
N1  - Scientific supervisor Professor T.N. Harutyunyan
ER  -