@book{ title = "Sancti Petri Chrysologi collectio sermonvm", author = "Petrus,Olivar, Alexandre", year = "1975-", publisher = "Brepols", address = "Tvrnholti", language = "lat","ger", howpublished = "print", keywords = "Quelle", note = "Text lat., Einl. dt", series = "Array, ...", }