@Book{Tietze1949,
author  = "Tietze, Heinrich",
title   = "Über stabile und indifferente Ruhelagen eines homogenen Zylinders",
year    = "1949",
address = "München",
series  = "Sitzungsberichte",
volume  = "1948,19.",
url     = "https://publikationen.badw.de/de/021020656",
}