PRZYBYŚ, M. Incidence of viruses and viroids in Polish hop gardens. Polish Journal of Agronomy, [S. l.], v. 43, n. 43, p. 76–82, 2020. DOI: 10.26114/pja.iung.407.2020.43.08. Disponível em: https://redakcjapja.iung.pl/index.php/pja/article/view/105. Acesso em: 7 cze. 2023.