“APPROBATION OF THE METHODOLOGY FOR A COMPREHENSIVE ASSESSMENT OF THE CONDITION SOURCES OF DRINKING WATER USE BY EXAMPLE LIPETSK REGION”, Proc. YSU C: Geol. Geogr. Sci., no. Special Issue N1 (270), p. 42, Sep. 2026, doi: 10.46991/PYSUC.2026.SI1.042.