@article{TMF_2008_156_1_a6,
     author = {K. S. Aramyan},
     title = {Integrable model of a~two-dimensional singular spherical oscillator in},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {131--137},
     year = {2008},
     volume = {156},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_156_1_a6/}
}