@inproceedings{copulavariationalinference,
  title = {Copula variational inference},
  author = {Dustin Tran and David M. Blei and Edoardo M. Airoldi},
  year = {2015},
  booktitle = {NeurIPS 2015 12},
  eprint = {1506.03159},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1506.03159v2},
}