@Article{mazumder09:_spect_regul_algor_for_learn,
  author = 	 {Rahul Mazumder and Trevor Hastie and Rob Tibshirani},
  title = 	 {Spectral Regularization Algorithms for Learning Large Incomplete Matrices},
journal = {Journal of Machine Learning Research},
  year = 	 {2010},
volume = 11,
pages = {2287-2322}
}
@article{hastie14:_matrix_compl_and_low_rank,
  author = 	 {Trevor Hastie and Rahul Mazumder and Jason Lee and Reza Zadeh},
  title = 	 {Matrix Completion and Low-rank {SVD} via Fast Alternating Least Squares},
  journal = 	 {Journal of Machine Learning Research},
  volume=16,
pages={3367-3402},
  year = 	 2015}
