Optical Network Design and Modeling 11th International IFIP TC6 Conference, ONDM 2007, Athens, Greece, May 29-31, 2007. Proceedings - Tomkos, Ioannis; Neri, Fabio; Solé Pareta, Josep; Masip Bruin, Xavier; Sánchez Lopez, Sergi (Springer Berlin Heidelberg, 2007)