@Book{Stieve1898,
author  = "Stieve, Felix",
title   = "Wallensteins Uebertritt zum Katholizismus",
year    = "1898",
address = "München",
series  = "Sitzungsberichte",
volume  = "1897,2,4.",
url     = "https://publikationen.badw.de/en/007458797",
}