@book{18763, author = {Peters, James F. and Skowron, Andrzej. and SpringerLink (Online service)}, title = {Transactions on Rough Sets IV}, publisher = {Springer-Verlag Berlin Heidelberg,}, year = {2005.}, series = {Lecture Notes in Computer Science,}, address = {Berlin, Heidelberg :}, url = {http://dx.doi.org/10.1007/11574798} }