@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}
}