MORRIS, C.; TOWERS, N.; AMYES, N. Six years of selection responses for resistance or susceptibility to ryegrass staggers in sheep. NZGA: Research and Practice Series, [S. l.], v. 7, p. 27–31, 1999. DOI: 10.33584/rps.7.1999.3401. Disponível em: https://www.nzgajournal.org.nz/index.php/rps/article/view/3401. Acesso em: 30 apr. 2026.