@ARTICLE{Bouchard2013Probabilistic,
  author = {Alexandre Bouchard-C\^{o}t\'{e}},
  title = {A {N}ote on {P}robabilistic {M}odels over {S}trings: {I}nference and  {R}epresentation with {I}ndexed {M}atrices},
  journal = {arXiv},
  volume = {1301.5054},
  year = {2013}
}