@article{separabletimecausalandtimerecursive,
  title = {Separable time-causal and time-recursive spatio-temporal receptive fields},
  author = {Tony Lindeberg},
  year = {2015},
  eprint = {1504.01502},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1504.01502v1},
}