by V. V. Ivanov, Institut slaviï¸ a︡novedeniiï¸ a︡ i balkanistiki (Akademiiï¸ a︡ nauk SSSR), R.S.F.S.R.) Konferentï¸ s︡iiï¸ a︡ "Etnolingvisticheskie balto-slaviï¸ a︡nskie kontakty v nastoiï¸ a︡shchem i proshlom" (1978 Moscow