@article{MS2_1975__37_166437,
     author = {Allan M. Sinclair and Kjeld B. Laursen},
     title = {Lifting matrix units in {C*-algebras} {II.}},
     journal = {Mathematica Scandinavica},
     pages = {167--172},
     publisher = {mathdoc},
     volume = {37},
     year = {1975},
     zbl = {0318.46073},
     url = {http://geodesic.mathdoc.fr/item/MS2_1975__37_166437/}
}