Columbia subject headings:
Harvard subject headings:
Christian saints--Byzantine Empire--Biography--History and criticism.
Christian saints--Rome--Biography--History and criticism.
Constantinople (Ecumenical patriarchate)
Orthodox Eastern Church--Liturgy--Texts--History and criticism.
Synaxarion.
Princeton subject headings:
Christian saints--Biography.
Orthodox Eastern Church--Liturgy.
Orthodox Eastern Church. Synaxarion
Synaxarion.