@Article{1931_Bethe_ZP_71,
  author =       {H. A. Bethe},
  title = 	 {Zur {T}heorie der {M}etalle.  I.  {E}igenwerte und {E}igenfunktionen der linearen {A}tomkette},
  journal = 	 {Zeit. f\"ur Physik},
  year = 	 {1931},
  volume = 	 {71},
  pages = 	 {205},
  doi = {10.1007/BF01341708}
}


@unpublished{arXiv:1108.2700,
  author    = {P. Ginsparg},
  title     = {It was twenty years ago today ...},
  eprint       = {http://arxiv.org/abs/1108.2700},
}


@Article{2016_Piroli_SP_1,
  author = 	 {Lorenzo Piroli and Pasquale Calabrese and Fabian H. L. Essler},
  title = 	 {{Quantum quenches to the attractive one-dimensional Bose gas: exact results}},
  journal = 	 {SciPost Phys.},
  year = 	 {2016},
  OPTkey = 	 {},
  volume = 	 {1},
  number = 	 {1},
  pages = 	 {001},
  OPTmonth = 	 {},
  OPTnote = 	 {},
  OPTannote = 	 {}
}