@Book{Steinheil1864,
author  = "Steinheil, Carl August",
title   = "Über einen neuen Meridiankreis seiner Construction",
year    = "1864",
address = "München",
series  = "Sitzungsberichte",
volume  = "1864,1,1",
url     = "https://publikationen.badw.de/de/003385043",
}