@article{RCM_2017_51_2_a1,
     author = {J. Sanabria and C. Carpintero and E. Rosas and O. Garc{\'\i}a},
     title = {On {Property} {(Saw)} and others spectral properties type {Weyl-Browder} theorems},
     journal = {Revista colombiana de matematicas},
     pages = {153--171},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {2017},
     url = {http://geodesic.mathdoc.fr/item/RCM_2017_51_2_a1/}
}