@article{fastmulticlassdictionarieslearningwith,
  title = {Fast Multi-class Dictionaries Learning with Geometrical Directions in MRI Reconstruction},
  author = {Zhifang Zhan and Jian-Feng Cai and Di Guo and Yunsong Liu and Zhong Chen and Xiaobo Qu},
  year = {2015},
  eprint = {1503.02945},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1503.02945v2},
}