Friedrichs, Stephan Algorithms and Complexity, MPI for Informatics, Max Planck Society;
arXiv:1308.4670.pdf (Preprint), 4MB
Fekete, S. P., Friedrichs, S., Kröller, A., & Schmidt, C. (2013). Facets for Art Gallery Problems. Retrieved from http://arxiv.org/abs/1308.4670.