@INPROCEEDINGS {13624,
author={D. Castanheira and A. Gameiro and A.  Silva},
doi={0},
booktitle={IEEE International Symp. on Personal, Indoor and Mobile Radio Commun  - PIMRC},
title={One-bit Null-Space Cognitive Interference Alignment for Heterogeneous Networks},
year={2013},
month={September},
volume={x},
pages={x-x} 
}