[Hypogeios]
Subtitle: a Byzantine term for perigee and some Byzantine views of the date of perigee and apogee
Publisher: Pontificium Institutum Orientalium Studiorum
Published: 1947
Place of publication: Roma
Language: eng
Number of pages: 403
Notes: Reprinted from: Orientalia christiana periodica, v. 13, n. 3-4.

Title in Greek (romanized); subtitle in English.