Koji Yamamoto Hirofumi Maruyama Takashi Shimizu Hidekazu Murata Susumu Yoshida Spectral Efficiency of Fundamental Cooperative Relaying in Interference-Limited Environments. 2674-2682 2008 91-B IEICE Transactions 8 http://dx.doi.org/10.1093/ietcom/e91-b.8.2674 db/journals/ieicet/ieicet91b.html#YamamotoMSMY08