National Health Service. "Probiotics". 27 November 2018.
Harvard Ed. “The Microbiome”. https://www.hsph.harvard.edu/nutritionsource/microbiome/
Y. Siva, A. Bernardi and L. Fozza. “The Role of Short-Chain Fatty Acids From Gut Microbiota in Gut-Brain Communication” Front. Endocrinol., 31 January 2020. https://doi.org/10.3389/fendo.2020.00025
AKC. “Probiotics for dogs” (2020). https://www.akc.org/expert-advice/nutrition/probiotics-for-dogs/
Nixon, SL, Rose, L, Muller, AT. Efficacy of an orally administered anti-diarrheal probiotic paste (Pro-Kolin Advanced) in dogs with acute diarrhea: A randomized, placebo-controlled, double-blinded clinical study. J Vet Intern Med. 2019; 33: 1286– 1294. https://doi.org/10.1111/jvim.15481
Davani-Davari, D., Negahdaripour, M., Karimzadeh, I., Seifan, M., Mohkam, M., Masoumi, S. J., Berenjian, A., & Ghasemi, Y. (2019). Prebiotics: Definition, Types, Sources, Mechanisms, and Clinical Applications. Foods (Basel, Switzerland), 8(3), 92. https://doi.org/10.3390/foods8030092
Aguilar-Toalá, J. E., R. Garcia-Varela, H. S. Garcia, V. Mata-Haro, A. F. González-Córdova, B. Vallejo-Cordoba, and A. Hernández-Mendoza. "Postbiotics: An evolving term within the functional foods field." Trends in Food Science & Technology 75 (2018): 105-114.
Wegh, Carrie AM, Sharon Y. Geerlings, Jan Knol, Guus Roeselers, and Clara Belzer. "Postbiotics and their potential applications in early life nutrition and beyond." International journal of molecular sciences 20, no. 19 (2019): 4673.
Alltech. 2021. “Prebiotics, probiotics and postbiotics for pets— what’s the difference?” https://www.alltech.com/blog/prebiotics-probiotics-and-postbiotics-pets-whats-difference
Salminen, Seppo, Maria Carmen Collado, Akihito Endo, Colin Hill, Sarah Lebeer, Eamonn MM Quigley, Mary Ellen Sanders et al. "The International Scientific Association of Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of postbiotics." Nature Reviews Gastroenterology & Hepatology (2021): 1-19.