Principles for Managing Technological Product Obsolescence
                        Year: 2007
                        Author: Rai, Rahul; Terpenny, Janis
                        Series: ICED
                        Section: Design for X
                        Page(s): 151-152 (exec. Summ.), full paper no. DS42_P_466
                        
Keywords: Product obsolescence, sustainable product development, technological obsolescence, design principles, piggyback products