Authors: Nyg†rd, F. Sandström, Arne

Citation: F. Nyg†rd et Arne Sandström, The weighted mean difference, Metron, (1/4), 1988, pp. 21

Authors: Sandström, Arne Waldén, Bertil Wretman, Jan

Citation: Arne Sandström et al., Variance Estimators of the Gini Coefficient Simple Random Sampling, Metron, (3/4), 1985, pp. 41