Aerosol-cloud color ratio derived from 1064 nm – 532 nm LIDAR measurements - Chua, Hans Walter P.; Vallar, Edgar A.; Macalalad, Ernest P.; Bangsal, Eric B.; Tan, Lance; Feraer, Jasper; Goseco, R.; Galvez, Maria Cecilia D. (Proceedings of the Samahang Pisika ng Pilipinas, 2006)