SinggalenY. A., GudiatoC., PrasetyoS. Y. J., and FibrianiC., “MANGROVE MONITORING USING NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI): CASE STUDY IN NORTH HALMAHERA, INDONESIA”, J. Ilmu dan Teknologi Kelautan Tropis, vol. 13, no. 2, pp. 219-239, Aug. 2021.