6Lovett A, Sunnenberg G, Haynes R. Using GIS to assess accessibility to primary healthcare services//Maheswaran R, Craglia M. GIS in Public Health Practice. New York: CRC Press, 2004,187-204.
7Guagliardo M F. Spatial accessibility of primary care: Concepts, methods and challenges. International Journal of Health Geographics. 2004, 3:3 [2009-2-20]. http://www. ij -healthgeographics.com/content/3/1/3.
8Higgs G. A Literature review of the use of GIS-based measures of access to health care services. Health Services & Outcomes Research Methodology, 2004, 5(2): 119-139.
9Yang D H, Goerge R, Mullner R. Comparing GIS-based methods of measuring spatial accessibility to health services. Journal of Medical Systems, 2006, 30(1): 23-32.