Peter Bruza Donald A. Sofge William F. Lawless Keith van Rijsbergen Matthias Klusch Quantum Interaction, Third International Symposium, QI 2009, Saarbrücken, Germany, March 25-27, 2009. Proceedings 5494 2009 http://dx.doi.org/10.1007/978-3-642-00834-4 978-3-642-00833-7 QI Lecture Notes in Computer Science Springer db/conf/qi/qi2009.html