Shiyuan Wang Quang Hieu Vu Beng Chin Ooi Anthony K. H. Tung Lizhen Xu Skyframe: a framework for skyline query processing in peer-to-peer systems. 345-362 2009 18 VLDB J. 1 http://dx.doi.org/10.1007/s00778-008-0104-3 db/journals/vldb/vldb18.html#WangVOTX09