TRAMONTINI, Cecilia Menchon; CARDOZO, Rejane Machado; ARIEIRA, Jailson de Oliveira. Identification of productive systems of beef cattle in the northwest Region of Paraná, Brazil. Semina: Ciências Agrárias, [S. l.], v. 39, n. 3, p. 1319–1326, 2018. DOI: 10.5433/1679-0359.2018v39n3p1319. Disponível em: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30255. Acesso em: 24 apr. 2026.