Hongxing Li Hanwen Luo Xinbing Wang Ming Ding Wen Chen Resource Allocation in Cooperative OFDMA Systems with Fairness Constraint. 1822-1824 2009 92-B IEICE Transactions 5 http://search.ieice.org/bin/summary.php?id=e92-b_5_1822&category=B&year=2009&lang=E&abst= db/journals/ieicet/ieicet92b.html#LiLWDC09