Markulf Kohlweiss, Sebastian Faust, Lothar Fritsch, Bartek Gedrojc, Bart Preneel. Efficient Oblivious Augmented Maps: Location-Based Services with a Payment Broker. In Nikita Borisov, Philippe Golle, editors, Privacy Enhancing Technologies, 7th International Symposium, PET 2007 Ottawa, Canada, June 20-22, 2007, Revised Selected Papers. Volume 4776 of Lecture Notes in Computer Science, pages 77-94, Springer, 2007. [doi]
Abstract is missing.