Wen Zhou Zongtian Liu Yan Zhao An Interval Lattice Model for Grid Resource Searching. 689-695 2007 conf/iccS/2007-2 International Conference on Computational Science (2) http://dx.doi.org/10.1007/978-3-540-72586-2_99 db/conf/iccS/iccS2007-2.html#ZhouLZ07