@inproceedings{DBLP:conf/vldb/OlkenR89,
author = {Frank Olken and
Doron Rotem},
title = {Random Sampling from B+ Trees},
booktitle = {VLDB},
year = {1989},
pages = {269-277},
ee = {http://www.vldb.org/conf/1989/P269.PDF},
crossref = {DBLP:conf/vldb/89},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/vldb/89,
editor = {Peter M. G. Apers and
Gio Wiederhold},
title = {Proceedings of the Fifteenth International Conference on
Very Large Data Bases, August 22-25, 1989, Amsterdam, The
Netherlands},
publisher = {Morgan Kaufmann},
year = {1989},
isbn = {1-55860-101-5},
bibsource = {DBLP, http://dblp.uni-trier.de}
}