Umakishore Ramachandran Kathleen Knobe Nissim Harel Hasnain A. Mandviwala Distributed Garbage Collection Algorithms for Timestamped Data. 1057-1071 2006 17 IEEE Trans. Parallel Distrib. Syst. 10 http://doi.ieeecomputersociety.org/10.1109/TPDS.2006.138 db/journals/tpds/tpds17.html#RamachandranKHM06