Kusnadi, I. N. S. Jaya, N. Puspaningsih, . M. Basuki, and L. Hakim, “Estimation Model of Site Quality of Teak (Tectona grandis) Using Very High-Resolution Imagery from Unmanned Aerial Vehicle in KPH Nganjuk”, JPK Wallacea, vol. 5, no. 2, pp. 185-194, Aug. 2016.