@article{GDZPPN002479125,
title = {Simultaneous Approximation to Algebraic Numbers by Elements of a Number Field.},
journal = {Monatshefte f\"ur Mathematik},
volume = {79},
year = {1975},
pages = {55-66},
zbl = {0317.10042},
url = {http://dml.mathdoc.fr/item/GDZPPN002479125}
}
Schmidt, Wolfgang M. Simultaneous Approximation to Algebraic Numbers by Elements of a Number Field.. Monatshefte für Mathematik, Tome 79 (1975) pp. 55-66. http://gdmltest.u-ga.fr/item/GDZPPN002479125/