Maire, N., M. Hegnauer, D. Nguyen, L. Godelmann, B. Peterhans, A. Hoffmann, D. de Savigny, and M. Tanner. “The Health Resources Allocation Model (HRAM) for the 21st Century”. Geospatial Health, vol. 6, no. 2, May 2012, pp. 295-8, doi:10.4081/gh.2012.147.