2Penchansky R,Thomas J W. The concept of access:definition and relationship to consumer satisfaction[J].Medical Care,1981,(02):127-140.
3McGrail M R,Humphreys J S. Measuring spatial accessibility to primary care in rural areas:improving the effectiveness of the two-step floating catchment area method[J].Applied Geography,2009,(04):533-541.
4Dai D. Black residential segregation,disparities in spatial access to health care facilities,and late-stage breast cancer diagnosis in metropolitan Detroit[J].Health & Place,2010,(05):1038-1052.
5Zhou X,Kim J. Social disparities in tree canopy and park accessibility:a case study of six cities in Illinois using GIS and remote sensing[J].Urban Forestry & Urban Greening,2013,(01):88-97.