 A parallel collection devoted to the works of Philo of Alexandria has developed as well.The bilingual edition policy launched by "Sources Chrétiennes"
has been followed by the German language series Fontes Christiani, published initially by Herder of Freiburg, Germany but now by Brepols of Turnhout, Belgium.Many of the texts published bilingually by 'Sources Chrétiennes' have appeared recently in Italian translation.