@article{ELA_2011__22__a46,
     author = {Gil, Michael},
     title = {Norm estimates for functions of two non-commuting matrices},
     journal = {The electronic journal of linear algebra},
     pages = {504--512},
     publisher = {mathdoc},
     volume = {22},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2011__22__a46/}
}