Kovalenko, L. M., and A. I. Kovalenko. “PATHOLOGICAL CHANGES IN THE BODY OF PIGLETS WITH RESPIRATORY SYNDROME”. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, no. 3(58), Feb. 2023, pp. 33-39, doi:10.32845/bsnau.vet.2022.3.6.