@article{romera2009coupling,
  title = {Coupling patterns of external arguments in the multiple-spiral medallions of the Mandelbrot set},
  author = {Romera, Miguel and Pastor, G and Orue, Amalia B and Arroyo, D and Montoya, F},
  journal = {Discrete Dynamics in Nature and Society},
  volume = {2009},
  year = {2009},
  publisher = {Hindawi}
}