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@article{AM2_1973__9_136331, author = {DAVID W. BOYD}, title = {Improved {Bound} for the {Disk-packing} {Constant} {(Short} {Communication)}}, journal = {Aequationes mathematicae}, pages = {115--116}, publisher = {mathdoc}, volume = {9}, year = {1973}, url = {http://geodesic.mathdoc.fr/item/AM2_1973__9_136331/} }
DAVID W. BOYD. Improved Bound for the Disk-packing Constant (Short Communication). Aequationes mathematicae, Tome 9 (1973), pp. 115-116. http://geodesic.mathdoc.fr/item/AM2_1973__9_136331/