?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Cristian&rft.aulast=Rusu&rft.au=Rusu%2C+Cristian&rft.date=September+2013&rft.title=Block+Orthonormal+Overcomplete+Dictionary+Learning&rft.genre=proceeding