@INPROCEEDINGS {13066,
author={L.   Cancela and J.  Rebola and J. J. O.  Pires},
doi={},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Analytical Assessment of the Impact of OOK Crosstalk Signals on a DPSK Direct Detection System},
year={2013},
month={May},
volume={-},
pages={---} 
}