Krishna Srikanth Gomadam Viveck R. Cadambe Syed Ali Jafar A Distributed Numerical Approach to Interference Alignment and Applications to Wireless Interference Networks. 3309-3322 2011 57 IEEE Trans. Inf. Theory 6 https://doi.org/10.1109/TIT.2011.2142270 db/journals/tit/tit57.html#GomadamCJ11