(1)
Gussoni, F. R. A.; Barros, P. S. de M. Epiphora in the Dog: Measurement of the Tear PH. Braz. J. Vet. Res. Anim. Sci. 2003, 40 (2), 87-94. https://doi.org/10.1590/S1413-95962003000200001.