Foppa, L., F. R. Caldara, S.P. Machado, R. Moura, R. K. S. Santos, I. A. Nääs, and R. G. Garcia. “ENVIRONMENTAL ENRICHMENT AND BEHAVIOUR OF PIGS: REVIEW”. Revista Brasileira de Engenharia de Biossistemas 8, no. 1 (December 9, 2014): 1–7. Accessed April 20, 2024. https://seer.tupa.unesp.br/index.php/BIOENG/article/view/173.