FERNANDEZ, R.; BIGA, P.; DI MASSO, R.J.  e  MARINI, P.R.. Economic evaluation of productive and reproductive indicators in dairy cows with different ages at first calving, in grazing systems. Cuban J. Agric. Sci. [online]. 2020, vol.54, n.4, pp. 493-501.  Epub 01-Dez-2020. ISSN 2079-3480.