
Columbia Institute for Tele-Information; Columbia Business School, New York, USA, more information on the author
volume 45, number 1, 2010, page 26 to 34
Raul L. Katz, Stephan Vaterlaus, Patrick Zenhäusern, Stephan Suter
volume 44, number 1, 2009, page 41 to 48
Raul L. Katz