Moussa Ayyash, Hany Elgala, Abdallah Khreishah, Volker Jungnickel, Thomas D. C. Little, Sihua Shao, Michael B. Rahaim, Dominic Schulz, Jonas Hilt, Ronald Freund. Coexistence of WiFi and LiFi toward 5G: concepts, opportunities, and challenges. IEEE Communications Magazine, 54(2):64-71, 2016. [doi]