The BIBP is a bibliography of journal articles in Patristics (the study of ancient, but post-biblical, Christian theological and ecclesiastical writers). Although the primary language of this resource is French, the articles listed are in many languages, including English. Searching by proper name in French and in English for the same person (e.g. Cassien/Cassian) brings up different sets of results.
Presently (2007) ca. 35,000 items in ca. 350 journals.