TY  - BOOK
AU  - Ghazaryan,H.
AU  - Ayvazyan,N.
ED  - Ministry of education and science of RA
ED  - State engineering university of Armenia (Politechnic)
TI  - English manual: For graduate students 
PY  - 2007///
CY  - Yerevan
PB  - SEUA Print
KW  - English language
KW  - Manuals
ER  -