MASAYNA, W. Reference Plant for the Assessment of fixation by N Isotope Dilution Technique . Thai Agricultural Research Journal, [S. l.], v. 5, n. 1-3, p. 70–76, 1988. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/261456. Acesso em: 14 apr. 2025.