Toward a framework for ecologies of artifacts: how are digital artifacts interconnected within a personal life? - Heekyoung Jung; Erik Stolterman; William Ryan; Tonya Thompson; Marty Siegel (NordiCHI, 2008)

Device ecology mapper: a tool for studying users' ecosystems of interactive artifacts. - William Ryan; Erik Stolterman; Heekyoung Jung; Martin A. Siegel; Tonya Thompson; William R. Hazlewood (CHI Extended Abstracts, 2009)