@article{AM2_1991__41_2-3_137392,
     author = {R. Bhatia and F. Kittaneh and C. Davis},
     title = {Some inequalities for commutators and an application to spectral variation.},
     journal = {Aequationes mathematicae},
     pages = {70--78},
     publisher = {mathdoc},
     volume = {41},
     number = {2-3},
     year = {1991},
     zbl = {0752.47005},
     url = {http://geodesic.mathdoc.fr/item/AM2_1991__41_2-3_137392/}
}