@article{01144357,
title = {A note on the approximation by continued fractions under an extra condition.},
journal = {The New York Journal of Mathematics [electronic only]},
volume = {3A},
year = {1998},
pages = {69-80},
zbl = {0902.11031},
language = {en},
url = {http://dml.mathdoc.fr/item/01144357}
}
Dajani, Karma; Kraaikamp, Cor. A note on the approximation by continued fractions under an extra condition.. The New York Journal of Mathematics [electronic only], Tome 3A (1998) pp. 69-80. http://gdmltest.u-ga.fr/item/01144357/