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@article{PS_2000__4__229_0, author = {Sonsino, Doron}, title = {A lemma on proximity of variances and expectations}, journal = {ESAIM: Probability and Statistics}, pages = {229--231}, publisher = {EDP-Sciences}, volume = {4}, year = {2000}, mrnumber = {1808332}, zbl = {0965.60008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PS_2000__4__229_0/} }
Sonsino, Doron. A lemma on proximity of variances and expectations. ESAIM: Probability and Statistics, Tome 4 (2000), pp. 229-231. http://geodesic.mathdoc.fr/item/PS_2000__4__229_0/