Donald CP, & Pharm D. Plumb’s Veterinary Drug Handbook. 6st ed. Pharma Vet Inc. Stockholm, Wisconsin. 2008. P. 606 & 801-803.
Lidbury JA, Suchodolski JS, Ivanek R, Steiner JM. Assessment of the variation associated with repeated measurement of gastrointestinal transit times and assessment of the effect of oral ranitidine on gastrointestinal transit times using a wireless motility capsule system in dogs. Vet Med Int. 2012; 2012:938417. doi: 10.1155/2012/938417. Epub 2012 Jun 26. PMID: 22792515; PMCID: PMC3390132.
Stephen JE, Edward CF. Textbook of Veterinary Internal Medicine. Disease of the dog and cat. 8sted. Elsevier. Missouri, USA. 2017. P. 3735.