@article{VUU_2008_1_a2,
     author = {L. E. Baranova and Yu. P. Chuburin},
     title = {On quasi-levels of the discret two-particle {Schr\"odinger} operator with a~decreasing small potential},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {35--46},
     publisher = {mathdoc},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2008_1_a2/}
}