@article{Knippschild:2015ba,
  author = "Knippschild, Bastian",
  title = "{Pi-Pi Scattering with N_f=2+1+1 Twisted Mass Fermions}",
  doi = "10.22323/1.214.0078",
  journal = "PoS",
  year = 2015,
  volume = "LATTICE2014",
  pages = "078"
}