A. S. Iswanto, S. Supriyanto, I. Z. Siregar, I. Wahyudi, and C. Corryanti, “Genetic Variation, Heritability and Correlation between Resin Production Character of Pinus merkusii High Resin Yielder (HRy) in Cijambu Seedling Seed Orchard (SSO)”, BIOTROPIA, vol. 20, no. 2, Feb. 2014.