1. Medical Innovation—A Diffusion Study;Coleman,1966
2. Sources of information and influence on new drug prescribing among physicians in an HMO;Christensen;Soc. Sci. Med.,1979
3. The role of commercial sources in the adoption of a new drug;Peay;Soc. Sci. Med.,1988
4. Drug prescribing: patterns, problems and proposals;Christensen;Soc. Sci. Med.,1981
5. The diffusion of an innovation among physicians in a large city;Winick;Sociometry,1961