MALAVOLTA, E.; SARRUGE, J.R.; HAAG, H.P.; VENCOVSKY, R.; SANTOS, C.F.O.; VALSECHI, O.; SCOTON, L.C.; COELHO, R.S.G. The relation of the concentration of macronutrients in the substrate and in the foliage to cell wall thickness and cellulose concentration in the xylem of slash pine (Pinus elliotti) . Anais da Escola Superior de Agricultura Luiz de Queiroz, Piracicaba, Brasil, v. 27, p. 295–333, 1970. DOI: 10.1590/S0071-12761970000100022. Disponível em: https://revistas.usp.br/aesalq/article/view/38926. Acesso em: 14 jul. 2026.