@article{MS2_1985__56_166935,
     author = {Kenneth R. Davidson},
     title = {Almost commuting {Hermitian} matrices.},
     journal = {Mathematica Scandinavica},
     pages = {222--240},
     publisher = {mathdoc},
     volume = {56},
     year = {1985},
     zbl = {0563.15010},
     url = {http://geodesic.mathdoc.fr/item/MS2_1985__56_166935/}
}