@article{sparsenestedmarkovmodelswithloglinear,
  title = {Sparse Nested Markov models with Log-linear Parameters},
  author = {Ilya Shpitser and Robin J. Evans and Thomas S. Richardson and James M. Robins},
  year = {2013},
  eprint = {1309.6863},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1309.6863v1},
}