@article{10_4153_CJM_1982_049_6,
     author = {Bustoz, Joaquin and Ismail, Mourad E. H.},
     title = {The {Associated} {Ultraspherical} {Polynomials} and their q {-Analogues}},
     journal = {Canadian journal of mathematics},
     pages = {718--736},
     year = {1982},
     volume = {34},
     number = {3},
     doi = {10.4153/CJM-1982-049-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-049-6/}
}