SIPOS, M. The effect of nickel-contamination, nitrogen-supply and liming on the chemical composition of perennial ryegrass (Lolium perenne L.). Acta Agraria Debreceniensis, [S. l.], n. 30, p. 85–92, 2008. DOI: 10.34101/actaagrar/30/2996. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/2996. Acesso em: 19 oct. 2021.