@ARTICLE {21420,
author={I.  Alimi and P. Monteiro and A. Teixeira},
doi={10.1007/s11277-017-4413-y},
journal={Wireless Personal Communications},
title={Outage Probability of Multiuser Mixed RF/FSO Relay Schemes for Heterogeneous Cloud Radio Access Networks (H-CRANs)},
year={2017},
month={May},
volume={95},
number={1},
pages={27-41},
ISSN={0929-6212}
}