@article {600,
	title = {Mesozoic conifers},
	journal = {The Botanical Review},
	volume = {43},
	year = {1977},
	pages = {218-280},
	chapter = {218},
	author = {Miller, Charles N., Jr.}
}
@article {542,
	title = {Die Gattung Dicranophyllum Gr. Eury in den varistischen Innensenken der DDR},
	journal = {Hallesches Jahrbuch f{\"u}r Geowissenschaften },
	volume = {2},
	year = {1977},
	pages = {73-83},
	chapter = {73},
	author = {Barthel, M.}
}
