@article{stochasticfirstandzerothordermethodsfor,
  title = {Stochastic First- and Zeroth-order Methods for Nonconvex Stochastic Programming},
  author = {Saeed Ghadimi and Guanghui Lan},
  year = {2013},
  eprint = {1309.5549},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1309.5549v1},
}