Population Information about Regions = https://infostat.nsi.bg/infostat/pages/reports/query.jsf?x_2=1168
NUTs3 Bindings = https://data.egov.bg/data/view/73244fd5-3648-4d59-a7a4-52a549aded24
Regional Mortality Bulgaria = https://ec.europa.eu/eurostat/estat-navtree-portlet-prod/BulkDownloadListing?sort=1&file=data%2Fdemo_r_mweek3.tsv.gz