%0 Journal Article %A S. C. Yam %A S. P. Yung %A W. Zhou %T A unified “bang-bang” principle with respect to R-invariant performance benchmarks %J Teoriâ veroâtnostej i ee primeneniâ %D 2012 %P 405-414 %V 57 %N 2 %U http://geodesic.mathdoc.fr/item/TVP_2012_57_2_a13/ %G en %F TVP_2012_57_2_a13