КотовА.А. and ВласоваЕ.Ф. 2011. Is It Sign or Its Meaning that Helps to Form a Concept?. Psychology. Journal of the Higher School of Economics. 8, 2 (Jul. 2011), 130-137. DOI:https://doi.org/10.17323/1813-8918-2011-2-130-137.