Shubhajeet Chatterjee Mohammad J. Abdel-Rahman Allen B. MacKenzie Optimal distributed allocation of almost blank subframes for LTE/WiFi coexistence. 1-6 2017 WiOpt https://dl.ifip.org/db/conf/wiopt/wiopt2017/1570342969.pdf https://doi.org/10.23919/WIOPT.2017.7959866 conf/wiopt/2017 db/conf/wiopt/wiopt2017.html#ChatterjeeAM17