@article{GDZPPN002352052, title = {Coverings of Metric Spaces with Randomly Placed Balls.}, journal = {Mathematica Scandinavica}, volume = {32}, year = {1973}, pages = {169-186}, zbl = {0285.60006}, url = {http://dml.mathdoc.fr/item/GDZPPN002352052} }
Hoffmann-Jorgensen, Jorgen. Coverings of Metric Spaces with Randomly Placed Balls.. Mathematica Scandinavica, Tome 32 (1973) pp. 169-186. http://gdmltest.u-ga.fr/item/GDZPPN002352052/