Dalia Abouelmaati, Arsalan Saeed, Oluwakayode Onireti, Muhammad Ali Imran and Kamran Arshad (2015), Femtocell Collaborative Outage Detection (FCOD) With Built-In Sleeping Mode Recovery (SMR) Technique, 10th International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM 2015), 21-23 April 2015, Doha, Qatar.