1. Using network concepts to clarify sources and mechanisms of social influence. In: eds. Progress in communication sciences. 12th Ed. Norwood, NJ: Ablex, 1993.
2. Identification of physician educational influentials (EI's) in small community hospitals. In: Proceedings of the Seventeenth Annual Conference on Research in Medical Education. Washington, DC, 1978: 283-288.
3. The State of the Art Versus the State of the Science: The Diffusion of New Medical Technologies into Practice
4. Informal educators for practicing physicians
5. Local opinion leaders: effects on professional practice and health care outcomes. Oxford, UK: The Cochrane Library, 2001.