1. Aday, L. A. and Anderson, R. (1975) Development of Indices of Access to Medical Care. Health Administration Press, Ann Arbor, MI
2. Anderson, R., Kasper, J., Frankel, R. M. et al. (1979) Total Survey Error. Jossey-Bass: San Francisco
3. Anonymous (1996) The National Ambulatory Care Survey: Unites States, 1975–1981 and 1985 Trends. Department of Health and Human Services: Hyattsville, Maryland
4. Ability to obtain health care: recent estimates from the Robert Wood Johnson Foundation National Access to Care Survey;Berk;Health Affairs,1995
5. Notes: a monthly newsletter;EBRI Education and Research Fund,1996