@book {Аitzetmuller1961, title = {Das Hexaemeron des Exarchen Johannes}, series = {Editiones monumentorum slavicorum veteris dialecti}, volume = {3}, year = {1961}, note = {

Parallel text in Old Bulgarian), Russian, German and Greek. Introduction in German.

}, publisher = {Akademische Druck- und Verlagsanstalt}, organization = {Akademische Druck- und Verlagsanstalt}, address = {Graz}, keywords = {Hexameron of John the Exarch, edition, Шестоднев на Йоан Екзарх, издание}, author = {Aitzetm{\"u}ller, Rudolf} }