Electronic Commerce and Web Technologies Second International Conference, EC-Web 2001 Munich, Germany, September 4-6, 2001 Proceedings - Bauknecht, Kurt; Bauknecht, Kurt; Madria, Sanjay K.; Madria, Sanjay K.; Pernul, Günther; Pernul, Günther (Springer Berlin Heidelberg : Imprint: Springer, 2001)