For citations:

Polenakovich M. THE BOUNDARIES DO NOT PERSIST FOR MUTUAL SCIENTIFIC COOPERATION FOR NEPHROLOGISTS OF THE BALKAN COUNTRIES: SECOND CONGRESS OF THE BALKAN CITIES ASSOCIATION OF NEPHROLOGY, DIALYSIS, TRANSPLANTATION AND ARTIFICIAL ORGANS (SEPTEMBER 6-10, 1997, R.MACEDONIA). Nephrology (Saint-Petersburg). 1999;3(3):84-85. (In Russ.) https://doi.org/10.24884/1561-6274-1999-3-3-84-85