@article{10_4064_sm169_2_1,
     author = {Pietro Aiena},
     title = {Classes of operators satisfying $a${-Weyl's} theorem},
     journal = {Studia Mathematica},
     pages = {105--122},
     publisher = {mathdoc},
     volume = {169},
     number = {2},
     year = {2005},
     doi = {10.4064/sm169-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm169-2-1/}
}