V. H. Barnabé, R. C. Barnabé, C. A. de Oliveira, M. L. Gambarini, M. C. Guido, and R. Valentim, “Testosterone concentration in blood serum of buffalo bulls during 24 hours in winter and summer seasons”, Braz. J. Vet. Res. Anim. Sci., vol. 32, no. 3, pp. 191–193, Sep. 1995, doi: 10.11606/issn.1678-4456.bjvras.1994.52110.