@Book{Waerden1954,
author  = "Waerden, Bartel L. van der",
title   = "Bemerkungen zu den Handlichen Tafeln des Ptolemaios",
year    = "1954",
address = "München",
series  = "Sitzungsberichte",
volume  = "1953,23",
url     = "https://publikationen.badw.de/en/003383768",
}