found: Christentum und Islām zwischen Konfrontation und Begegnung, 1983:title page (Ludwig Hagemann) back cover (born 1947; Dr. theol.; lists works)
found: LC data base, March 20, 1984(hdg.: Hagemann, Ludwig, 1947- )
found: Moslems in Strafvollzug, 1982:title page (L. Hagemann)
found: German Wikipedia, viewed October 15, 2021(Ludwig Hagemann (Theologe); Ludwig Hagemann; born December 28, 1947, in Niederlangen, Lower Saxony; German historian of religion and Catholic theologian; obtained his doctorate in 1975; research interest: history of Islam; since 1992, he has taught history of religion at the Universität Mannheim)
