ORSBORN, S.; GAWITH, P.; CAMERON, D. Cost-benefits of supplementing ewes with willow and poplar foliage on a model hill country farm in Wairarapa. NZGA: Research and Practice Series, [S. l.], v. 10, p. 35–40, 2003. DOI: 10.33584/rps.10.2003.2990. Disponível em: https://www.nzgajournal.org.nz/index.php/rps/article/view/2990. Acesso em: 13 sep. 2026.