Columbia subject headings:
Michael, Cerularius, Patriarch of Constantinople, approximately 1000-1059.
Psellus, Michael.
Harvard subject headings:
Michael, Cerularius, Patriarch of Constantinople, approximately 1000-1059.
Princeton subject headings:
Michael, Cerularius, Patriarch of Constantinople, approximately 1000-1059--Correspondence.
Psellus, Michael. Correspondence.