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@article{MOMA_1974__78_186329, author = {T.W. Cusick}, title = {The {Two-Dimensional} {Diophantine} {Approximation} {Constant.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {297--304}, publisher = {mathdoc}, volume = {78}, year = {1974}, zbl = {0294.10023}, url = {http://geodesic.mathdoc.fr/item/MOMA_1974__78_186329/} }
T.W. Cusick. The Two-Dimensional Diophantine Approximation Constant.. Monatshefte für Mathematik, Tome 78 (1974), pp. 297-304. http://geodesic.mathdoc.fr/item/MOMA_1974__78_186329/