@article{10_4064_sm219_1_1,
     author = {Qingping Zeng and Qiaofen Jiang and Huaijie Zhong},
     title = {Spectra originating from {semi-B-Fredholm} theory
 and commuting perturbations},
     journal = {Studia Mathematica},
     pages = {1--18},
     publisher = {mathdoc},
     volume = {219},
     number = {1},
     year = {2013},
     doi = {10.4064/sm219-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm219-1-1/}
}