An extremum problem for polynomials
Compositio Mathematica, Tome 14 (1959-1960), pp. 260-268. 
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     author = {Schoenberg, I. J. and Szeg\"o, Gabor},
     title = {An extremum problem for polynomials},
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     language = {en},
     url = {http://www.numdam.org/item/CM_1959-1960__14__260_0/}
}
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Schoenberg, I. J.; Szegö, Gabor. An extremum problem for polynomials. Compositio Mathematica, Tome 14 (1959-1960), pp. 260-268. http://www.numdam.org/item/CM_1959-1960__14__260_0/

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