@article{Pascalutsa:2016N1,
  author = "Pascalutsa, Vladimir",
  title = "{Causality constraint on bound states and scattering with zero-range force, or do perturbative pions deserve another chance?}",
  doi = "10.22323/1.253.0114",
  journal = "PoS",
  year = 2016,
  volume = "CD15",
  pages = "114"
}