1. Project 2000—a new preparation for practice;Council,1986
2. Problem-based learning: what and how do students learn;Hmelo-Silver;Educ Psychol Rev,2004
3. Learning to learn: preparing teachers and students for problem-based learning;Ngeow,2001
4. Theoretical aspects of project-based learning in higher education;Morgan;Br J Educ Technol,1983
5. Problem-based learning as a training modality in the occupational medicine curriculum;Felton;Occup Med (Lond),1996