Taseva, Evgeniya, Iva Christova, Elitsa Panayotova, Diana ilieva, and Valentina Pavlova. “IS THERE AN OUTBREAK OF TICK-BORNE ENCEPHALITIS IN PERNIK DISTRICT, BULGARIA? FOUR CASES REGISTERED FOR A PERIOD OF FOUR YEARS – CLINICAL MANIFESTATIONS AND EPIDEMIOLOGICAL RELATIONS”. PROBLEMS of Infectious and Parasitic Diseases 49, no. 1 (April 16, 2021): 19–25. Accessed April 18, 2024. https://pipd.ncipd.org/index.php/pipd/article/view/49-1-3_tick-borne_encephalitis_in_pernik.