Ellis, T.J. & Levy, Y. (2008). Framework of Problem-Based Research: A Guide for Novice Researchers on the Development of a Research-Worthy Problem. Informing Science Journal, 11, p. 17-33.
Click Ellis_T.J._And_Levy_Y_2008_._Informing_Science_Journal_11_p_17-33.pdf link to view the file.