Nguyen Thanh Binh A. Min Tjoa Roland Wagner An Object Oriented Multidimensional Data Model for OLAP. 69-82 http://link.springer.de/link/service/series/0558/bibs/1846/18460069.htm 2000 conf/waim/2000 Web-Age Information Management db/conf/waim/waim2000.html#NguyenTW00