@article{JMLR:v14:parviainen13a,
  author  = {Pekka Parviainen and Mikko Koivisto},
  title   = {Finding Optimal Bayesian Networks Using Precedence Constraints},
  journal = {Journal of Machine Learning Research},
  year    = {2013},
  volume  = {14},
  number  = {42},
  pages   = {1387--1415},
  url     = {http://jmlr.org/papers/v14/parviainen13a.html}
}