Peter Charanis.Studies on the demography of the Byzantine empire: collected studies Variorum Reprints, 1972 p. 223 [360]:"Thus, every emperor who sat on the Byzantine throne the accession of Basil I to the death of Basil II (867–1025) was of Armenian or partially Armenian origin. But besides the emperors there were many others among the military and political leaders of Byzantine during this period who were Armenians or of Armenian descent"
Leo VI. Imperium Byzantinum, Imperator 865–912 (1932). Oraison funèbre de Basile I. Pont. Inst. Orientalium Stud. OCLC1073789498.{{cite book}}: CS1 maint: numeric names: authors list (link)