Baymakova, M., G. T. Popov, R. Pepovich, and I. Tsachev. “Hepatitis E Virus Infection in Bulgaria: A Brief Analysis of the Situation in the Country”. Open Access Macedonian Journal of Medical Sciences, vol. 7, no. 3, Jan. 2019, pp. 458-60, doi:10.3889/oamjms.2019.073.