КузьминаЮ. В. “Big-Frog-In-A-Small-Pond Effect: Is It Always Good for a Child to Study in a Strong Slass?”. Psychology. Journal of the Higher School of Economics, Vol. 13, no. 4, Dec. 2016, pp. 712-40, doi:10.17323/1813-8918-2016-4-712-740.