Achoyan, Z. 2013. EVALUATION OF CHANGES IN GROUNDWATER HYDRODYNAMIC CONDITIONS RESULTED BY CONSTRUCTION OF DRAINAGE GALLERIES FOR YEREVAN UNDERGROUND. Proceedings of the YSU C: Geological and Geographical Sciences. 47, 2 (231) (Aug. 2013), 13–18. DOI:https://doi.org/10.46991/PYSU:C/2013.47.2.013.