Dzhambov, Angel, Krasimira Dikova, Tzveta Georgieva, Teodor Panev, Plamen Mukhtarov, and Reneta Dimitrova. “Short-Term Effects of Air Pollution on Hospital Admissions for Cardiovascular Diseases and Diabetes Mellitus in Sofia, Bulgaria (2009–2018)”. Archives of Industrial Hygiene and Toxicology 74, no. 1 (March 7, 2023). Accessed April 7, 2025. https://arhiv.imi.hr/index.php/arhiv/article/view/1555.