- Author: Johannes Adelphus Bodo Gotzkowsky (Hrsg.)
- Language: German
- Year: 1980
- Author: Alfredo Torero
- Language: Spanish
- Year: 1995
- Author: Alberto García Carraffa A. García Carraffa
- Language: Spanish
- Year: 1925
- Author: Streissler Erich W.
- Language: German
- Year: 1998
- Author: Gesellschaft für Rheinische Geschichtskunde
- Language: German
- Year: 2019
- Author: Yfaat Weiss
- Language: German
- Year: 2022
- Author: Aenne Gottschalk
- Language: Spanish, Castilian
- Year: 2022
