@article{Hagemann2006,
  author    = {Hans-J{\"u}rgen Hagemann},
  title     = {Electrical properties of acceptor-doped BaTiO3 ceramic. Hagemann, H. J.},
  journal   = {Berichte der Deutschen Keramischen Gesellschaft. 55 (1978)},
  pages     = {353 -- 355},
  year      = {2006},
}