Chang-Sup Park Myoung-Ho Kim Yoon-Joon Lee Usability-based caching of query results in OLAP systems. 103-119 2003 68 Journal of Systems and Software 2 http://dx.doi.org/10.1016/S0164-1212(02)00142-5 db/journals/jss/jss68.html#ParkKL03