The Biographisch-Bibliographisches Kirchenlexikon (BBKL) is a German biographical encyclopedia related to the history of the Church, founded 1975 by Friedrich Wilhelm Bautz. It contains more than 20,000 biographical articles with bibliographies of the person’s work and selected secondary readings.

A searchable database created from the results of an annual magazine that lists and records, with high scientific level criteria, everything that is published in the world, in books and scientific journals in the field of Italian language and literature.