@inbook{0e16214012f04418a0887197b6b95889,
title = "Aperture",
author = "Heidemarie Halbritter and Silvia Ulrich and Fri{\dh}geir Gr{\'i}msson and Martina Weber and Reinhard Zetter and Michael Hesse and Ralf Buchner and Matthias Svojtka and Andrea Frosch-Radivo",
year = "2018",
month = oct,
day = "10",
doi = "10.1007/978-3-319-71365-6\_9",
language = "English",
isbn = "978-3-030-10046-9",
pages = "207{\textendash}294",
booktitle = "Illustrated Pollen Terminology",
publisher = "Springer",
edition = "2.",
}