Vijay Gopalakrishnan Ruggero Morselli Bobby Bhattacharjee Peter J. Keleher Aravind Srinivasan Distributed Ranked Search. 7-20 2007 conf/hipc/2007 HiPC http://dx.doi.org/10.1007/978-3-540-77220-0_6 db/conf/hipc/hipc2007.html#GopalakrishnanMBKS07