TY - BOOK AU - Ishkhanyan,Tigran ED - Ministry of Education and Sciences of RA ED - Yerevan State University TI - Quantum two-state level-crossing models in terms of the Heun functions: Abs. of dissert. ... of candidate in phys-matth sciences : A.04.21 PY - 2019/// CY - Yerevan KW - Laser Physics KW - Thesis N1 - Scientific supervis. : A.M. Ishkhanyan ER -