@article{EXMATH_1993_1993_1_a17,
     author = {Gonz\'alez, Manuel and Martin\'on, Antonio},
     title = {Cantidades operacionales que caracterizan a los operadores {semi-Fredholm.}},
     journal = {Extracta mathematicae},
     pages = {132-137},
     publisher = {mathdoc},
     volume = {8},
     number = {2-3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1993_1993_1_a17/}
}