@InProceedings{,
author = { Otfried Cheong (geb. Schwarzkopf) and Hyo-Sil Kim and Lena Schlipf },
title = { Computing Barrier Resilience for Line Segments is NP-hard and APX-hard },
booktitle = { Proc.of the 14th Korea-Japan Joint Workhop on Algorithms and Computation (WAAC 2011) },
year = { 2011 },
}
