Tolong jelaskan mengenai Karya ilmiah dari Immanuel Bekker

Ducas, Michael, Ducae : Michaelis Ducae Nepotis Historia Byzantina, ed. by Bekker, August Immanuel (Bonn: Weber, 1834).

Khoniátis, Nikítas, Narrattive of Events after the Capture of the City [by the Franks], ed. by Bekker, August Immanuel (Bonn:  Weber, 1835).

Phrantzis, G., Chronicon, ed. by Bekker, August Immanuel (Bonn:  Weber, 1838).

Khalkokondhýlis, ‘Laónikos' (i.e. Nikólaos), De Origine et Rebus Gestis Turcarum, ed. by Bekker, August Immanuel (Bonn:  Weber, 1843).

Attaleiátis, Michael, Historia, ed. by Bekker, August Immanuel (Bonn:  Weber, 1853).