@article{TMF_1990_85_1_a6,
     author = {N. M. Atakishiyev and S. K. Suslov},
     title = {Difference analogs of~the harmonic oscillator},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {64--73},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1990_85_1_a6/}
}