Moreno H., J.; Fernández A., V.; Chipayo G., Y.; Crespo P., A. REFERENCE VALUES OF LACRIMAL PRODUCTION THROUGH THE SCHIRMER TEST IN CANINES IN A VETERINARY CLINIC IN LIMA CITY. Rev. investig. vet. Perú 2009, 20 (2), 249-253. https://doi.org/10.15381/rivep.v20i2.618.