@article{Schroeder2014,
  author    = {Ulrich E. Schr{\"o}der},
  title     = {Comments on a proposed quantization of interacting fields},
  journal   = {Zeitschrift f{\"u}r Naturforschung, A},
  volume    = {26},
  number    = {12},
  pages     = {1941 -- 1944},
  doi       = {10.1515/zna-1971-1201},
  year      = {2014},
}