@INPROCEEDINGS { Rsds634,
author = {Millan, Marta and Machuca, Fernando}, 
title = {Enhancing the exploitation of data mining in relational database systems via the rough sets theory including precision variables}, 
booktitle = {Proceedings of the 1998 ACM symposium on Applied Computing}, 
pages = {70-73}, 
publisher = {ACM Press}, 
address = {New York, NY, USA}, 
month = {February}, 
year = 1998, 
isbn = {0-89791-969-6}}, 
keywords = {data mining, knowledge discovery database, precision variable, }, 
}