@article{AFM_2011_36_2_a6,
     author = {Manuel Gonz\'alez and Antonio Mart{\'\i}nez-Abej\'on and Margot Salas-Brown},
     title = {Perturbation classes for {semi-Fredholm} operators on subprojective and superprojective spaces},
     journal = {Annales Fennici Mathematici},
     pages = {481--491},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {2011},
     doi = {10.5186/aasfm.2011.3625},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2011.3625/}
}