@article{GDZPPN002083515, title = {Covering a Square by Equal Circles.}, journal = {Elemente der Mathematik}, volume = {50}, year = {1995}, pages = {167-170}, zbl = {0847.52018}, url = {http://dml.mathdoc.fr/item/GDZPPN002083515} }
Tarnai, T.; Gáspár, Zsolt. Covering a Square by Equal Circles.. Elemente der Mathematik, Tome 50 (1995) pp. 167-170. http://gdmltest.u-ga.fr/item/GDZPPN002083515/