Filho, G. N. J., Verneque, R. da S., Lemos, Álvaro de M., da Silva, H. C. M., & Reis, R. B. (1992). Physiological and environmental effects on calving intervals in milking crossbred cows of the production system at the CNPGL/Embrapa. Pesquisa Agropecuaria Brasileira, 27(1), 163–170. https://doi.org/10.1590/S1678-3921.pab1992.v27.3631