@Book{Heckel1950,
author  = "Heckel, Johannes",
title   = "Initia iuris ecclesiastici Protestantium. Vorgelegt am 2. Dezember 1949",
year    = "1950",
address = "München",
series  = "Sitzungsberichte",
volume  = "1949,5",
url     = "https://publikationen.badw.de/en/007458815",
}