@INPROCEEDINGS { Rsds3823,
author = {Wu, Trong}, 
title = {Rough Number Structure and Computation}, 
booktitle = {Soft Computing}, 
conference = {International Workshop on Rough Sets and Soft Computing}, 
pages = {248--251}, 
publisher = {The Society for Computer Simulation}, 
address = {San Diego, U.S.A.}, 
month = {November}, 
year = 1994, 
editor = {Lin, Tsau Young and Wildberger, A.M.}, 
isbn = {1-56555-077-3}, 
abstract = {This paper addresses the mathematical properties of rough numbers, defines the computational model for rough number, and develops a feasible software package in the Ada programming language for computation. The software package can control and reduce rounding error for computation of rough numbers so that the result of each computation step is controlled within an interval. When one completes his computation, the final result is given in interval form and the absolute error is also shown.}, 
keywords = {rough number, model number, rounding error, ada programming language, interval arithmetic, }, 
}