@ARTICLE{wierstra09algo,
  AUTHOR = { Daan Wierstra and Alexander F{\"o}rster and Jan Peters and J{\"u}rgen Schmidhuber},
  TITLE = {{Recurrent Policy Gradients}},
  JOURNAL = {{Logic Journal of IGPL}},
  YEAR = {2010}, 
  VOLUME = {18},
  NUMBER = {5},
  PAGES = {620-634},
  PUBLISHER = {Oxford University Press},
}