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@article{MOMA_1991__111_1_178524, author = {Fr\'ed\'eric Gu\'erin}, title = {On a {Problem} {Connected} with a {Theorem} of {Jarnik.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {287--292}, publisher = {mathdoc}, volume = {111}, number = {1}, year = {1991}, zbl = {0736.11030}, url = {http://geodesic.mathdoc.fr/item/MOMA_1991__111_1_178524/} }
Frédéric Guérin. On a Problem Connected with a Theorem of Jarnik.. Monatshefte für Mathematik, Tome 111 (1991) no. 1, pp. 287-292. http://geodesic.mathdoc.fr/item/MOMA_1991__111_1_178524/