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

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