Edna hipoteza za sădbata na severite sled pohoda na Nikifor I prez 811 godina.

Parallelsachtitel: A hypothesis about the fate of Severi Tribe after the campaign of Nicephoros I un 811
1. Verfasser: Stanev, Kamen
Ort/Verlag/Jahr: Varna : Izdat. "Ongăl", 2011.
Umfang/Format: vol. 1: 433-452 : plans ; 23 cm.
Enthalten in: Terra antiqua Balcanica et mediterranea :