Synaxarion of Constantinople
A compilation of brief accounts on every saint that was celebrated during a liturgical year, arranged by months. It was one of the first and most thorough compilation of synaxaria and it is considered a valuable source for the Byzantine studies. Its compilation must be dated to the 10th century and was probably linked to the tradition of the Church of Constantinople. It was the model for many synaxaria compiled later (such as the Menologion of Basil II), and it was completed or slightly altered in some parts through the years. It was published in 1902 by the Belgian scholar Hippolyte Delehaye (Synaxarium ecclesiae Constantinopolitanae e codice Sirmondiano [Bruxelles 1902]).