@article{1077476240,
author = {Verblunsky, S.},
title = {A theorem on quartic polynomials},
journal = {Duke Math. J.},
volume = {17},
number = {1},
year = {1950},
pages = { 507-510},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476240}
}
Verblunsky, S. A theorem on quartic polynomials. Duke Math. J., Tome 17 (1950) no. 1, pp. 507-510. http://gdmltest.u-ga.fr/item/1077476240/