@article {5662,
	title = {Pollen Ultrastructure and Its Systematic Relevance in Bocageopsis, Ephedranthus, Malmea, and Unonopsis (Annonaceae)},
	journal = {Plant Systematics and EvolutionPlant Systematics and Evolution},
	volume = {150},
	number = {3-4},
	year = {1985},
	pages = {165-177},
	author = {Waha, M.}
}
@article {5663,
	title = {Different Origins of Fragile Exines within the Annonaceae},
	journal = {Plant Systematics and EvolutionPlant Systematics and Evolution},
	volume = {158},
	number = {1},
	year = {1987},
	pages = {23-27},
	author = {Waha, M.}
}
@article {5664,
	title = {Aperture Types within Sapranthus and Polyalthia (Annonaceae)},
	journal = {Plant Systematics and EvolutionPlant Systematics and Evolution},
	volume = {161},
	number = {3-4},
	year = {1988},
	pages = {135-146},
	author = {Waha, M. and Hesse, M.}
}
@article {5665,
	title = {Pollen Evolution and Systematics in Annonaceae with Special Reference to the Disulcate Australian Endemic Genera},
	journal = {Plant Systematics and EvolutionPlant Systematics and Evolution},
	volume = {161},
	number = {1-2},
	year = {1988},
	pages = {1-12},
	author = {Waha, M. and Morawetz, W.}
}
