@article{BUMI_1950_3_5_2_a5,
     author = {Sz\'asz, Otto},
     title = {On the relative extrema of ultraspherical polynomials},
     journal = {Bollettino della Unione matematica italiana},
     pages = {125--127},
     publisher = {mathdoc},
     volume = {Ser. 3, 5},
     number = {2},
     year = {1950},
     zbl = {0039.07602},
     mrnumber = {37944},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1950_3_5_2_a5/}
}