1. Cramér, H.: Mathematical Methods of Statistics (§ 15.7). Princeton University Press, Princeton 1946.
2. Mallows, C.L.: Generalizations of Tchebycheff's Inequalities. J. Roy. Statist. Soc. Ser. B18, 1956, 139–168.
3. Vysočanskiĩ, D.F., undJu. I. Petunin: Justification of the 3σ Rule for Unimodal Distributions. Theory Probab. Math. Statist.21, 1980, 25–36.
4. Zwet, W. van: Convex transformations: A new approach to skewness and kurtosis. Statist. Neerlandica18, 1964, 433–441.
5. Runnenberg, J.Th.: Mean, median, mode. Statist. Neerlandica32, 1978, 73–79.