@article{TMF_1991_89_2_a2,
     author = {A. S. Zhedanov},
     title = {{\textquotedblleft}Hidden symmetry{\textquotedblright} of {Askey{\textendash}Wilson} polynomials},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {190--204},
     year = {1991},
     volume = {89},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_89_2_a2/}
}