Mkrtchyan, H. H., & Avetisyan, A. A. (2009). ESTIMATION OF QUALITY APPROBATION OF ORE OF HANQAVAN MOLYBDENUM DEPOSITS. Proceedings of the YSU C: Geological and Geographical Sciences, 43(1 (218), 20–24. https://doi.org/10.46991/PYSU:C/2009.43.1.020