@article {1492,
	title = {Paleozoic conifers},
	journal = {Proceedings of the International Congres of Plant Sciences},
	volume = {1},
	year = {1927},
	pages = {401-411},
	chapter = {401},
	author = {Florin, Rudolf}
}
@article {springerlink:10.1007/BF02873610,
	title = {Upper carboniferous and lower permian conifers},
	journal = {The Botanical Review},
	volume = {16},
	year = {1950},
	note = {10.1007/BF02873610},
	pages = {258-282},
	publisher = {Springer New York},
	issn = {0006-8101},
	doi = {doi:10.1007/BF02873610},
	url = {http://dx.doi.org/10.1007/BF02873610},
	author = {Florin, Rudolf}
}
@article {1356,
	title = {Die Koniferen des Oberkarbons und des Unteren Perms. F{\"u}nftes Heft},
	journal = {Palaeontographica Abtheilung B},
	volume = {85},
	year = {1940},
	pages = {243-363 + pls. CLI-CLXVI + Tafelerklarungen p. 55-62},
	chapter = {243},
	author = {Florin, Rudolf}
}
@article {1052,
	title = {On Walkomia n. gen., a genus of Upper Palaeozoic conifers from Gondwanaland},
	journal = {Kungl. Svenska  Vetenskapsakademiens Handlingar. Tredje Serien},
	volume = {18},
	year = {1940},
	pages = {3-23, pls 1-4},
	chapter = {3},
	author = {Florin, Rudolf}
}
@article {566,
	title = {Evolution in Cordaites and conifers},
	journal = {Acta Horti Bergiani},
	volume = {15},
	year = {1951},
	pages = {285-388},
	chapter = {285},
	author = {Florin, Rudolf}
}
@article {565,
	title = {Die Koniferen des Oberkarbons und des unteren Perms I-VII},
	journal = {Palaeontographica Abtheilung B},
	volume = {85},
	year = {1938},
	pages = {1-729},
	chapter = {1},
	author = {Florin, Rudolf}
}
