?url_ver=Z39.88-2004&rft_id=10.1109%2FLSP.2012.2209871&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Rusu%2C+Cristian&rft.aulast=Rusu&rft.aufirst=Cristian&rft.pages=631-634&rft.issn=1070-9908&rft.atitle=Stagewise+K-SVD+to+Design+Efficient+Dictionaries+for+Sparse+Representations&rft.title=IEEE+Signal+Processing+Letters&rft.date=2012&rft.issue=10&rft.volume=19&rft.genre=article