@article{TVP_2012_57_2_a13,
     author = {S. C. Yam and S. P. Yung and W. Zhou},
     title = {A unified ``bang-bang'' principle with respect to {R-invariant} performance benchmarks},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {405--414},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TVP_2012_57_2_a13/}
}