@article{10_4153_CMB_1984_050_x,
     author = {Al-Salam, Waleed and Allaway, WM. R. and Askey, Richard},
     title = {A {Characterization} of the {Continuous} {q-Ultraspherical} {Polynomials}},
     journal = {Canadian mathematical bulletin},
     pages = {329--336},
     year = {1984},
     volume = {27},
     number = {3},
     doi = {10.4153/CMB-1984-050-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1984-050-x/}
}