@article{MS2_1973__33_166336,
     author = {Kjeld B. Laursen},
     title = {A {Note} on {Lifting} of {Matrix} {Units} in {C*-Algebras.}},
     journal = {Mathematica Scandinavica},
     pages = {338--342},
     publisher = {mathdoc},
     volume = {33},
     year = {1973},
     zbl = {0279.46032},
     url = {http://geodesic.mathdoc.fr/item/MS2_1973__33_166336/}
}