@inbook {93,
	title = {Pollen of palaeo- and neotropical Annonaceae: definition of the aperture by morphological and functional characters},
	booktitle = {Pollen and spores: form and function},
	year = {1986},
	pages = {375{\textendash}388},
	publisher = {Academic Press.},
	organization = {Academic Press.},
	address = {London},
	author = {Le Thomas, A. and Morawetz, W. and Waha, M.},
	editor = {Blackmore, S. and Ferguson, I.K.}
}
