@inbook{a80fd5b2f8e44b5fb482a2109949b46b,
title = "Abu'l-Jud's answer to a question of al-Biruni concerning the regular heptagon",
author = "Jan Hogendijk",
year = "1987",
doi = "0.1111/j.1749-6632.1987.tb37202.x",
language = "English",
isbn = "0-89766-395-0",
volume = "500",
series = "Annals of the New York Academy of Sciences",
publisher = "New York Academy of Sciences",
pages = "175--183",
editor = "David King and George Saliba",
booktitle = "From Deferent to Equant: a volume of studies in the ancient and medieval near East in honor of E.S. Kennedy",
}