@article{38061,
  author = {Norbert V{\'a}vra},
  title = {Franz Unger (1800{\textendash}1879) und seine Experimente zur {\quotedblbase}Urzeugung{\textquotedblleft}},
  year = {2000},
  journal = {Berichte der Geologischen Bundesanstalt},
  volume = {51},
  pages = {53{\textendash}56},
  url = {https://opac.geologie.ac.at/wwwopacx/wwwopac.ashx?command=getcontent\&server=images\&value=BR0051_053_A.pdf},
  language = {eng},
}