@book {4304, title = {Hymnes sur la nativit{\'e}}, series = {Sources chr{\'e}tiennes}, number = {459}, year = {2001}, publisher = {{\'E}d. du Cerf}, organization = {{\'E}d. du Cerf}, address = {Paris}, keywords = {Ephrem, Spirituality}, isbn = {9782204066754}, author = {Fran{\c c}ois Cassingena-Tr{\'e}vedy} }