TY - JOUR AU - Manuel González AU - Antonio Martínez-Abejón AU - Margot Salas-Brown TI - Perturbation classes for semi-Fredholm operators on subprojective and superprojective spaces JO - Annales Fennici Mathematici PY - 2011 SP - 481 EP - 491 VL - 36 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2011.3625/ DO - 10.5186/aasfm.2011.3625 LA - en ID - AFM_2011_36_2_a6 ER -