@InCollection{,
author = { Hee-Kap Ahn and Sang-Sub Kim and Christian Knauer and Lena Schlipf and Chan-Su Shin and Antoine Vigneron },
title = { Covering and Piercing Disks with Two Centers },
booktitle = { Algorithms and Computation },
year = { 2011 },
volume = { 7074 },
editor = { Takao Asano, Shin-ichi Nakano, Okamoto Yoshio, Osamu Watanabe },
publisher = { Springer Berlin/Heidelberg },
pages = { 50-59 },
}
