?url_ver=Z39.88-2004&rft_id=10.1109%2FICIP.2013.6738031&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Bevilacqua&rft.aufirst=Marco&rft.au=Bevilacqua%2C+Marco&rft.date=September+2013&rft.btitle=Proceedings+of+the+20th+IEEE+International+Conference+on+Image+Processing+(ICIP)&rft.title=K-WEB%3A+Nonnegative+dictionary+learning+for+sparse+image+representations&rft.genre=bookitem