@ARTICLE {10328,
author={J. B. Bastos and K. Huq and S.M. Mumtaz and J. Rodriguez and C. Verikoukis},
doi={10.1002/dac.2969},
journal={International Journal of Communication Systems},
title={Energy efficiency optimization for downlink OFDMA system in heterogeneous network with QoS constraints},
year={2015},
month={April},
volume={30},
number={2},
pages={1-12},
ISSN={1099-1131}
}