@inbook { , title = {Creating Social Presence through Peripheral Awareness}, booktitle = {Ambient Lifestyle}, editor = {Aarts, Emile; Diedericks, Elmo}, year = {2007}, pages = {69-71}, publisher = {Book Industry Services (Bis)}, author = {Ruyter de, B. and Huijnen, C. and Markopoulos, P. and IJsselsteijn, W.A.;} }