@ARTICLE { Rsds3630,
author = {Kortelainen, Jari}, 
title = {On relationship between modified sets, topological spaces and rough sets}, 
journal = {Fuzzy Sets and Systems}, 
number = 	{(no. 1)}, 
volume = 61, 
pages = {91-95}, 
publisher = {Elsevier Science Inc.}, 
address = {Amsterdam, The Netherlands}, 
month = {January}, 
year = 1994, 
issn = {0165-0114}, 
abstract = {In this paper we define modifiers by relations. Especially, weakening and substantiating modifiers are defined by a so called accessibility relation which is a reflexive relation on a non-empty set X. After presenting some main results we prove that this type of modifiers will satisfy the Kuratowski Closure Axioms. This means that modifiers in fact induce topological spaces. Also rough sets are considered to be a special case of modified sets.}, 
keywords = {closure operators, fuzzy sets, modifiers, modifier logic, rough sets, }, 
}