Despina Polemi, Spyridon Papastergiou. A Secure e-Ordering Web Service. In Reima Suomi, Regis Cabral, J. Felix Hampe, Arto Heikkilä, Jonna Järveläinen, Eija Koskivaara, editors, Project E-Society: Building Bricks, 6TH IFIP International Conference on e-Commerce, e-Business, and e-Government (I3E 2006), October 11-13, 2006, Turku, Finland. Volume 226 of IFIP, pages 352-365, Springer, 2006. [doi]