Aydin Öztürk Cengiz Gungor Pelin Güneri Zuhal Tugsel Selin Gögüs A Histogram Smoothing Method for Digital Subtraction Radiography. 392-399 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3261&spage=392 2004 conf/advis/2004 ADVIS db/conf/advis/advis2004.html#OzturkGGTG04