BOGATAJ, David; DROBNE, Samo; BOGATAJ, Marija; ROGELJ, Valerija. Geo-Gerontological Observatory: Lower Sava Region. Maribor, Slovenija: Alma Mater Press,2023. Disponível em: https://press.almamater.si/index.php/amp/catalog/book/60. Acesso em: 17 mar. 2026.