@article{SoffMuellerRafelskietal.2014,
  author    = {Gerhard Soff and Berndt M{\"u}ller and Johann Rafelski and Walter Greiner},
  title     = {Solution of the Dirac equation for scalar potentials and its implications in atomic physics},
  journal   = {Zeitschrift f{\"u}r Naturforschung, A},
  volume    = {28},
  pages     = {1389 -- 1396},
  doi       = {10.1515/zna-1973-0902},
  year      = {2014},
}