Characterizations of tauberian operators and other semigroups Manuel González Ruiz; Víctor M. Onieva Aleixandre — 1988 Extracta Mathematicae
Unconditionally converging operators and Fredholm theory Manuel González Ruiz; Víctor M. Onieva Aleixandre — 1988 Extracta Mathematicae
Semiembeddings and semi-Fredholm operators Manuel González Ruiz; Víctor M. Onieva Aleixandre — 1988 Extracta Mathematicae
Semi-Fredholm operators and semigroups associated with some classical operators ideals (II) Manuel González Ruiz; Víctor M. Onieva Aleixandre — 1988 Extracta Mathematicae