@article{PORMA_1993__50_3_115693,
     author = {Marcell\'an Espanol, Francisco and Tasis Montes, Carmen},
     title = {Appell orthogonal polynomials on the unit circle},
     journal = {Portugaliae mathematica},
     pages = {335--342},
     publisher = {mathdoc},
     volume = {50},
     number = {3},
     year = {1993},
     mrnumber = {1244511},
     zbl = {0795.33008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1993__50_3_115693/}
}