C. de A. B. Sobrinho, L. K. Hatamoto-Zervoudakis, V. H. Barnabe, M. Nichi, and C. A. de Oliveira, “Evaluation of work stress effects on Rottweilers male dog´s fertility”, Braz. J. Vet. Res. Anim. Sci., vol. 46, no. 4, pp. 280–287, Aug. 2009, doi: 10.11606/issn.1678-4456.bjvras.2009.26776.