Marcus Jürgens Hans-Joachim Lenz Tree Based Indexes vs. Bitmap Indexes - a Performance Study. 1 1999 conf/dmdw/1999 DMDW http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-19/paper1.pdf db/conf/dmdw/dmdw1999.html#JurgensL99