@inproceedings{LiScMa09d,
	author = {Chunhui Liu and Anke Schmeink and Rudolf Mathar},
	title = "Dual Optimal Resource Allocation for Heterogeneous Transmission in {OFDMA} Systems",
	booktitle = "{IEEE} Globecom 2009",
	address = {Honolulu, Hawaii, USA},
	month = Dec,
	year = 2009,
	hsb = {hsb910015864},
	}