Gildas Avoine, Serge Vaudenay. Optimal Fair Exchange with Guardian Angels. In Kijoon Chae, Moti Yung, editors, Information Security Applications, 4th International Workshop, WISA 2003, Jeju Island, Korea, August 25-27, 2003, Revised Papers. Volume 2908 of Lecture Notes in Computer Science, pages 188-202, Springer, 2003. [doi]
Abstract is missing.