Measures of Non-strict-singularity and Non-strict-cosingularity Snežana Živković — 2002 Matematički Vesnik
Semi-Fredholm operators and perturbations. Živković, Snežana — 1997 Publications de l'Institut Mathématique. Nouvelle Série
Matrix transformations between the sequence space Bv^p and certain bk spaces E. Malkowsky; V. Rakočević; Snežana Živković — 2002 Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques