“CONTEMPORARY CHALLENGES IN AIR QUALITY MANAGEMENT AND MONITORING IN ENVIRONMENTALLY VULNERABLE CITIES: A CASE STUDY BASED ON YEREVAN DATA”. Proceedings of the YSU C: Geological and Geographical Sciences, no. Special Issue N1 (270), Sept. 2026, p. 15, https://doi.org/10.46991/PYSUC.2026.SI1.015.