@article{1102736801,
author = {Morrison, John F.},
title = {Approximations to real algebraic numbers by algebraic numbers of smaller degree.},
journal = {Pacific J. Math.},
volume = {97},
number = {2},
year = {1981},
pages = { 403-413},
language = {en},
url = {http://dml.mathdoc.fr/item/1102736801}
}
Morrison, John F. Approximations to real algebraic numbers by algebraic numbers of smaller degree.. Pacific J. Math., Tome 97 (1981) no. 2, pp. 403-413. http://gdmltest.u-ga.fr/item/1102736801/