Bresolin, Tiago, et al. “COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL”. Brazilian Animal Science Ciência Animal Brasileira, vol. 16, no. 4, Oct. 2015, pp. 474-80, https://teste.revistas.ufg.br/vet/article/view/28131.