@article{UZERU_2003_3_a1,
     author = {A. G. Petrosyan},
     title = {The investigation of the differential operator's point  spectrum in infinity with precise behavior coefficients},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {8--15},
     publisher = {mathdoc},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2003_3_a1/}
}