@article{GDZPPN002487640, title = {On a Problem Connected with a Theorem of Jarnik.}, journal = {Monatshefte f\"ur Mathematik}, volume = {112}, year = {1991}, pages = {287-292}, zbl = {0736.11030}, url = {http://dml.mathdoc.fr/item/GDZPPN002487640} }
Guérin, Frédéric. On a Problem Connected with a Theorem of Jarnik.. Monatshefte für Mathematik, Tome 112 (1991) pp. 287-292. http://gdmltest.u-ga.fr/item/GDZPPN002487640/