Daniela Florescu Alon Y. Levy Recent Progress in Data Integration - A Tutorial. 1-2 adbis98/P001.pdf 1998 ADBIS db/conf/adbis/adbis98.html#FlorescuL98 conf/adbis/98 db/conf/adbis/FlorescuL98.html http://link.springer.de/link/service/series/0558/bibs/1475/14750001.htm