KOSTOV , Y.; ALEXANDROVA, V. Electrocardiographic Reciprocal Complexes in Sows Grown in industrial conditions. Bulgarian Journal of Agricultural Science, Sofia, BG, v. 17, n. 1, p. 122–125, 2011. Disponível em: https://agriacad.eu/ojs/index.php/bjas/article/view/5787.. Acesso em: 21 oct. 2026.