@article{pastor2007operating,
  title = {Operating with external arguments of Douady and Hubbard},
  author = {Pastor, Gerardo and Romera, Miguel and Alvarez, Gonzalo and Nunez, Juana and Arroyo, David and Montoya, Fausto and others},
  journal = {Discrete Dynamics in Nature and Society},
  volume = {2007},
  pages = {1--17},
  year = {2007},
  publisher = {Hindawi}
}