Boris Rachev Angel Smrikarov Dimo Dimov Proceedings of the 2007 International Conference on Computer Systems and Technologies, CompSysTech 2007, Rousse, Bulgaria, June 14-15, 2007 285 2007 978-954-9641-50-9 CompSysTech ACM International Conference Proceeding Series ACM db/conf/compsystech/compsystech2007.html