 Later – Slavic philology, ethnography, the study of archaeological remains and archival rarities.His, total 120, scientific papers related to the history of Galicia in the different eras.In the discussion about the original conception of August Belovsky about the existence of two Galichs - one of which was to be the center of Galician kingdom, which was located on the territory of present-day Slovakia (11th-12th centuries), and the other - the center of Galician principality on the Carpathian region (the middle of the 12th to 13th centuries).