@article{ Richter_Ullman82,
  author = {Richter, J. and Ullman, S.},
  title = {A model for the temporal organization of {X}- and {Y}-type receptive
	fields in the primate retina},
  journal = {Biol. Cybern.},
  year = {1982},
  volume = {43},
  pages = {127-145},
  en_number = { }
}