MORRIS, C.; AMYES, N. Progress in breeding sheep for resistance to ryegrass staggers. NZGA: Research and Practice Series, [S. l.], v. 13, p. 431–431, 2007. DOI: 10.33584/rps.13.2006.3116. Disponível em: https://www.nzgajournal.org.nz/index.php/rps/article/view/3116. Acesso em: 30 apr. 2026.