@article{10_4064_sm_106_2_153_174,
     author = {Bruce A.  Barnes},
     title = {Perturbation theory relative to a {Banach} algebra of operators},
     journal = {Studia Mathematica},
     pages = {153--174},
     publisher = {mathdoc},
     volume = {106},
     number = {2},
     year = {1993},
     doi = {10.4064/sm-106-2-153-174},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-106-2-153-174/}
}