1. Temporal variation in tear production in normal beagle dogs as determined by Schirmer Tear Test.;Häkanson;Veterinary and Comparative Ophthalmology,1997
2. The fluctuation of tear production in the dog.;Berger;Journal of the American Animal Hospital Association,1998
3. Dog tear secretion and tear proteins.;Roberts;Journal of Small Animal Practice,1962
4. Abnormal tear secretion in the dog.;Roberts;Modern Veterinary Practice,1962
5. Clinical estimation of lacrimal function in dogs.;Rubin;Journal of the American Veterinary Medical Association,1965