Peng Wang Xiang Chen Shidong Zhou Jing Wang 0001 On Ergodic Capacity of Spectrum-Sharing Systems in Fading Channels. 1904-1907 2009 92-B IEICE Transactions 5 http://search.ieice.org/bin/summary.php?id=e92-b_5_1904&category=B&year=2009&lang=E&abst= db/journals/ieicet/ieicet92b.html#WangCZW09