Franks, Moravians, and Magyars: The Struggle for the Middle Danube, 788- 907.
Timothy Reuter|Charles R. Bowlus
Assembles evidence from Frankish, Moravian, and Byzantine documents; archaeological finds; details of the terrain to buttress view that center Slavic Moravian empire was in what is now Serbia, much farther southeast than usually thought. This interpretation explains how Franks managed otherwise inexplicable military successes against Moravians.
The American Historical Review