1. Five hundred years of specialty certification and compulsory continuing medical education. Venice 1300-1801.;Ell;JAMA,1984
2. The evolution of continuing medical education: the Massachusetts experience.;Aghababian;Berkshire Med J,2004
3. Postgraduate education in Michigan.;Bruce;J Mich State Med Soc,1937
4. Two-way radio and its advantages.;Woolsey;Ann NY Acad Sci,1967
5. Two years of experience with two-way radio conferences for postgraduate medical education.;Woolsey;J Med Educ,1958