@InProceedings{Gontaszewska-Piekarz:2018,
  author      = "A. Gontaszewska-Piekarz",
  title       = "The discovery and the beginnings of the mining company in Zielona Góra, Poland",
  booktitle   = "18. Altbergbau-Kolloquium; ISBN: 9783938390221",
  address     = "Wieliczka, Polska",
  publisher   = "Kraków, Instytut Mechaniki Górotworu PAN",
  pages       = "458--467",
  year        = "2018",
}