Agent-Mediated Electronic Commerce : Designing Trading Strategies and Mechanisms for Electronic Markets : AMEC 2013, Saint Paul, MN, USA, May 6, 2013, TADA 2013, Bellevue, WA, USA, July 15, 2013, and AMEC and TADA 2014, Paris, France, May 5, 2014 : Revised Selected Papers - Ceppi, Sofia (edición) ((Lecture Notes in Business Information Processing ;)