Journal Version:

@article{sun2017complete_a,
   title={Complete Dictionary Recovery Over the Sphere I: Overview and the Geometric Picture},
   author={Sun, Ju and Qu, Qing and Wright, John}, 
   journal={IEEE Transactions on Information Theory}, 
   year={2017}, 
   volume={63}, 
   number={2}, 
   pages={853-884},
}

Conference Version:

@inproceedings{sun2015complete, 
   title={Complete dictionary recovery using nonconvex optimization}, 
   author={Sun, Ju and Qu, Qing and Wright, John}, 
   booktitle={International Conference on Machine Learning}, 
   pages={2351--2360}, 
   year={2015},
}