@article{GDZPPN002026821, title = {Improved Bound for the Disk-packing Constant (Short Communication)}, journal = {Aequationes mathematicae}, volume = {9}, year = {1973}, pages = {115-116}, url = {http://dml.mathdoc.fr/item/GDZPPN002026821} }
BOYD, DAVID W. Improved Bound for the Disk-packing Constant (Short Communication). Aequationes mathematicae, Tome 9 (1973) pp. 115-116. http://gdmltest.u-ga.fr/item/GDZPPN002026821/