Among his lectors were Aleksandar Balabanov, Dimitar Dechev, Gavril Katsarov, Veselin Beshevliev, Bogdan Filov, Petar Mutafchiev.

His first work was Phonetics of the Latin Inscriptions from the Bulgarian Lands, published in 1942.

Venedikov had more than 150 publications on Thracian history, culture, art and language based on many studied archaeological sites and monuments.

In 1972, he organized an exhibition of Thracian art which included the finest objects from all over Bulgaria which travelled in many cities around the world.

Venedikov also proved that Preslav, which would become capital of the Bulgarian Empire in 893, already existed as a significant settlement in the beginning of the 9th century.