Витоки праслов’янської фонології (підсистема консонантизму): лінгвоісторіографічний аспект

The views of linguists about the process of consonant subsystem of Proto-Slavic dialect of Proto-Indo-European language formation and development according to the common tendencies of Proto-Slavic phonological system development are analyzed in the article. The importance of historical phonological investigations studying is founded with the aim of upgrading explanatory level of Phonology and formation causal-investigatory connects the result of which is formation of Proto-Slavic phonological system.