@article{EXMATH_1988_1988_1_a17,
     author = {Gonz\'alez Ortiz, Manuel and Onieva Aleixandre, V{\'\i}ctor M.},
     title = {Operadores de {semi-Fredholm} y semi-grupos asociados con algunos ideales cl\'asicos de operadores},
     journal = {Extracta mathematicae},
     pages = {34-36},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1988_1988_1_a17/}
}