@article{10_4064_sm_91_1_73_77,
     author = {Vladim{\'\i}r M\"uller},
     title = {Adjoining inverses to noncommutative {Banach} algebras and extensions of operators},
     journal = {Studia Mathematica},
     pages = {73--77},
     publisher = {mathdoc},
     volume = {91},
     number = {1},
     year = {1988},
     doi = {10.4064/sm-91-1-73-77},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-91-1-73-77/}
}