@inproceedings{CAIA-CP-091130A, title = {{Engset Formula for Bufferless OBS/OPS: When Is and When Isn't Lengthening the Off-Time Redundant?}}, author = {A. Zalesky and E.W.M Wong and M. Zukerman and H. L. Vu}, month = {30 November}, year = {2009}, pages = {1 -6}, booktitle = {Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE}, address = {Honolulu, HI, USA}, doi = {10.1109/GLOCOM.2009.5425990}, url = {http://dx.doi.org/10.1109/GLOCOM.2009.5425990} }