@INPROCEEDINGS{Bal_05, AUTHOR = {Wolf-Tilo Balke and Wolfgang Nejdl and Wolf Siberski and Uwe Thaden}, TITLE = {Progressive Distributed Top-k Retrieval in Peer-to-Peer Networks}, BOOKTITLE = {The 21st International Conference on Data Engineering (ICDE 2005)}, YEAR = {2005}, MONTH = {April}, ADDRESS = {Tokyo, Japan}, URL = {http://www.kbs.uni-hannover.de/Arbeiten/Publikationen/2004/topk_icde2005.pdf}, }