@article{1183423275,
author = {Birkhoff, George D.},
title = {An elementary double inequality for the roots of an algebraic equation having greatest absolute value},
journal = {Bull. Amer. Math. Soc.},
volume = {22},
number = {3},
year = {1915},
pages = { 494-495},
language = {en},
url = {http://dml.mathdoc.fr/item/1183423275}
}
Birkhoff, George D. An elementary double inequality for the roots of an algebraic equation having greatest absolute value. Bull. Amer. Math. Soc., Tome 22 (1915) no. 3, pp. 494-495. http://gdmltest.u-ga.fr/item/1183423275/