Oguy, O., Ivasiuk, O. and Ivasiuk, G. (2021) “Middle Ages Christian Colour Precious Stones Symbols in the Context of a new Conception of Symbol as a Synergetic Linguo-Cultural Hyper Sign”, Mediaforum : Analytics, Forecasts, Information Management, 9, pp. 275–286. doi:10.31861/mediaforum.2021.9.275-286.