The Design Research Pyramid: A Three Layer Framework
                        Year: 2007
                        Author: Wang, Wenjuan; Duffy, Alex H.B.
                        Series: ICED
                        Section: Knowledge
                        Page(s): 427-428 (exec. Summ.), full paper no. DS42_P_410
                        
Keywords: Research framework, knowledge-based design support systems, design knowledge