@article{BUMI_1957_3_12_2_a11,
     author = {Al-Salam, Waleed A.},
     title = {On the {Bessel} polynomials.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {227--229},
     publisher = {mathdoc},
     volume = {Ser. 3, 12},
     number = {2},
     year = {1957},
     zbl = {0080.05302},
     mrnumber = {88571},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1957_3_12_2_a11/}
}