Kysterna, O., A. Vodyanyk, and O. Musiienko. “Use of Geoinformation Technologies (GIS) in the System of Monitoring and Prevention of Animal Leptospirosis of the Cherkas Region”. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, no. 1-2(44-45), July 2019, pp. 27-41, doi:10.32845/bsnau.vet.2019.1-2.5.