PERA, J. Linear and Non-linear Relationships Between Shares of the Agri-food Industries of the Warsaw Stock Exchange. Risk Aspect. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 17, n. 4, p. 249–262, 2017. DOI: 10.22630/PRS.2017.17.4.101. Disponível em: https://prs.sggw.edu.pl/article/view/2935. Acesso em: 20 kwi. 2024.