Gevorgyan, M. R. “JASPIS OF GENETIC TYPES OF GEMSTONE MINERALIZATION IN CONNECTION WITH OFIOLITE ASSOCIATION OF ROCKS OF ARMENIA”. Proceedings of the YSU C: Geological and Geographical Sciences, vol. 40, no. 1 (209), Mar. 2006, pp. 128-33, doi:10.46991/PYSU:C.2006.40.1.128.