@article {557,
	title = {Hirmeriella muensteri: new data on the fertile organs leading to a revised concept of the Cheirolepidiaceae},
	journal = {Review of Palaeobotany and Palynology},
	volume = {68},
	year = {1991},
	pages = {147-179},
	chapter = {147},
	author = {Clement-Westerhof, Johanna A. and Konijnenburg-Van Cittert, Johanna H. A. van}
}
@article {555,
	title = {Aspects of Permian palaeobotany and palynology IV. The conifer Ortiseia Florin from the Val Gardena Formation of the Dolomites and The Vicentinian Alps (Italy) with special reference to a revised concept of the Walchiaceae (Goeppert) Schimper},
	journal = {Review of Palaeobotany and Palynology},
	volume = {41},
	year = {1984},
	pages = {51-166},
	chapter = {51},
	author = {Clement-Westerhof, Johanna A.}
}
@article {200,
	title = {Aspects of Permian palaeobotany and palynology, VII. The Majonicaceae, a new family of Late Permian conifers},
	journal = {Review of Palaeobotany and Palynology},
	volume = {52 },
	year = {1987},
	pages = {375-402},
	chapter = {375},
	url = {http://igitur-archive.library.uu.nl/bio/2006-1214-212959/clement-westerhof_87_aspects.pdf},
	author = {Clement-Westerhof, Johanna A.}
}
