@book{Madelung1987,
author="Wilferd Madelung",
title="Islam in Yemen",
year="1987",
booktitle="Yemen: 3000 Years of Art and Civilisation in Arabia Felix",
editor="Werner Daum",
publisher="Pinguin-Verlag",
address="Innsbruck",
pages="174-77",
keyword0="Investment",
keyword1="Islam",
keyword2="Zaydi Islam",
type="chapter"
}