DOAN, Nga Pham Ngoc; T. HA, Phat. Using 15N Isotope Technique for Study the Balance of Nitrogen Fertilizer in Young Rubber Tree -Hevea Brasilliencis. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 24, n. 5, p. 325–330, 2015. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4837. Acesso em: 27 sep. 2025.