@article {625,
	title = {Die Rh{\"a}to- Jurassischen Floren des Iran und Afghanistans: 9. Coniferophyta},
	journal = {Palaeontographica Abtheilung B},
	volume = {238},
	year = {1996},
	pages = {77-139},
	chapter = {77},
	author = {Schweitzer, Hans-Joachim and Kirchner, M.}
}
@article {624,
	title = {Der weibliche Zapfen von Pseudovoltzia liebeana und seine Bedeutung fur die Phylogenie der Koniferen},
	journal = {Palaeontographica Abtheilung B},
	volume = {114},
	year = {1963},
	pages = {1-29},
	chapter = {1},
	author = {Schweitzer, Hans-Joachim}
}
