@article{SPM942, author = "Duy Trong Ngo and Suman Khakurel and Tho Le-Ngoc", title = "Joint Subchannel Assignment and Power Allocation for OFDMA Femtocell Networks", journal = "IEEE Transactions on Wireless Communications", year = 2014, volume = 13, number = 1, pages = "342-355", month = "jan" }