Youn-Kyung Lim Erik Stolterman Josh D. Tenenberg The anatomy of prototypes: Prototypes as filters, prototypes as manifestations of design ideas. 2008 15 ACM Trans. Comput.-Hum. Interact. 2 http://doi.acm.org/10.1145/1375761.1375762 db/journals/tochi/tochi15.html#LimST08