@article{GDZPPN002477653, title = {Lower Bound for a Diophantine Approximation Function.}, journal = {Monatshefte f\"ur Mathematik}, volume = {75}, year = {1971}, pages = {398-401}, zbl = {0238.10017}, url = {http://dml.mathdoc.fr/item/GDZPPN002477653} }
Cusick, T.W. Lower Bound for a Diophantine Approximation Function.. Monatshefte für Mathematik, Tome 75 (1971) pp. 398-401. http://gdmltest.u-ga.fr/item/GDZPPN002477653/