Location of zeros of infrapolynomials
Compositio Mathematica, Tome 14 (1959-1960), pp. 50-70. 
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     author = {Motzkin, T. S. and Walsh, J. L.},
     title = {Location of zeros of infrapolynomials},
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     pages = {50--70},
     publisher = {Kraus Reprint},
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     year = {1959-1960},
     mrnumber = {104786},
     zbl = {0086.02002},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1959-1960__14__50_0/}
}
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Motzkin, T. S.; Walsh, J. L. Location of zeros of infrapolynomials. Compositio Mathematica, Tome 14 (1959-1960), pp. 50-70. http://archive.numdam.org/item/CM_1959-1960__14__50_0/

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