It is important that Tsenov's facts show that the Bulgarians have been in the Balkans since the 4th century, with which the author has even shaken th… - Gančo Cěnov

The sources used by Tsenov are scarcely accessible to the average European because one wuld use their lifetime to search for them and to use them. Dr. Tsenov deserves approval, if only for the merit and the temperament with which he treats his work."

Tsenov comes out of a detailed source-check, which many of his predecessors have hardly ever seen. It facilitates the reader by printing these sources in the original.... From the same sources, it can be seen that the Bulgarians were south of the Danube for 350 years and so they did not come until 679 from the Volga before the Slavs and also before the Huns in Illyria and Thrace. The Bulgarians lived in 350 AD. along the lower Danube in the Byzantine Empire south of the lower Danube. They were a mighty people, not only in Moesia but also in Thrace and Illyria."

In the time of his reign (Anastasius), the Thracian Vitalian kept under some pretense by using of the exiled bishops, and he took Thrace, Scythia and Moesia, to Varna and Anhialo and led a large number of Huns and Bulgars.