@article{MuellerGreiner2014,
  author    = {Berndt M{\"u}ller and Walter Greiner},
  title     = {The Two Centre Dirac Equation},
  journal   = {Zeitschrift f{\"u}r Naturforschung, A},
  volume    = {31},
  number    = {1},
  pages     = {1 -- 30},
  doi       = {10.1515/zna-1976-0102},
  year      = {2014},
}