@article{GDZPPN000367273,
title = {The Union of Balls and Its Dual Shape.},
journal = {Discrete \& computational geometry},
volume = {13},
year = {1995},
pages = {415-440},
zbl = {0826.68053},
url = {http://dml.mathdoc.fr/item/GDZPPN000367273}
}
Edelsbrunner, H. The Union of Balls and Its Dual Shape.. Discrete & computational geometry, Tome 13 (1995) pp. 415-440. http://gdmltest.u-ga.fr/item/GDZPPN000367273/