Paula Eerola Balázs Kónya Oxana Smirnova Tord Ekelöf Mattias Ellert John Renner Hansen Jakob Langgaard Nielsen Anders Wäänänen Aleksandr Konstantinov Farid Ould-Saada 27-35 2003 7 IEEE Internet Computing 4 http://doi.ieeecomputersociety.org/10.1109/MIC.2003.1215657 db/journals/internet/internet7.html#EerolaKSEEHNWKO03