@article{NSJOM_2001_31_2a_12,
     author = {D. S. 

 {\DJ}or{\dj}evi\'c},
     title = {Semi-browder essential spectra of quasisimilar operators},
     journal = {Novi Sad Journal of Mathematics},
     pages = {115-124},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2001},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2001_31_2a_12/}
}