@book{Gatzhammer1994,
  author    = {Stefan Gatzhammer},
  title     = {Slovensky mision{\´a}r v portugalskom vaezen{\´i} : braz{\´i}lsky mision{\´a}r P. Jozef Keyling, SJ z Banskej Stiavnice},
  number    = {4},
  year      = {1994},
}