“Geographic Information System (GIS) in the AOK Nordost – what added value does GIS provide? And geostatistical methods for the provision of care to the insured?” (2020) gis.Business | issn : 1869-9286, 21(1), pp. 39–40. Available at: https://journal-gis.business/index.php/gisb/article/view/584 (Accessed: 9 November 2026).