@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}, }