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