@article{GDZPPN002202832,
title = {On two theorems of Kopetzky and Schnitzer on the approximation of continued fractions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {358},
year = {1985},
pages = {1-3},
zbl = {0568.10019},
url = {http://dml.mathdoc.fr/item/GDZPPN002202832}
}
Tong, Jingcheng. On two theorems of Kopetzky and Schnitzer on the approximation of continued fractions.. Journal für die reine und angewandte Mathematik, Tome 358 (1985) pp. 1-3. http://gdmltest.u-ga.fr/item/GDZPPN002202832/