@article{SchulzGeisslerBraun1995,
  author    = {Schulz, G{\"u}nter and Geissler, Heinz and Braun, Michael},
  title     = {Properties of plasma silica powders used to SAPO molecular sieve synthesis},
  year      = {1995},
  language  = {en}
}
@article{SchulzBraunGeissler1995,
  author    = {Schulz, G{\"u}nter and Braun, Michael and Geissler, Heinz},
  title     = {Contributions to the structural and chemical composition of plasma chemically synthesized silica powders},
  year      = {1995},
  language  = {en}
}