SIAM
ACM-SIAM Symposium on Discrete Algorithms
Networks and Optimization

Erlebach, T.& van Leeuwen, E. J. (2008). Approximating Geometric Coverage Problems. Proceedings of the Nineteenth Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2008, San Francisco, California, USA, January 20-22, 2008, 1267–1276.