@inproceedings{anewretractionforacceleratingthe,
  title = {A New Retraction for Accelerating the Riemannian Three-Factor Low-Rank Matrix Completion Algorithm},
  author = {Zhizhong Li and Deli Zhao and Zhouchen Lin and Edward Y. Chang},
  year = {2015},
  booktitle = {CVPR 2015 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2015/html/Li_A_New_Retraction_2015_CVPR_paper.html},
}