The spectral topology in rings Dragana Cvetković-Ilić; Robin Harte — 2010 Studia Mathematica The spectral topology of a ring is easily defined, has familiar applications in elementary Banach algebra theory, and appears relevant to abstract Fredholm and stable range theory.
Representations for the Drazin inverse of bounded operators on Banach space. Cvetković-Ilić, Dragana S.; Wei, Yimin — 2009 ELA. The Electronic Journal of Linear Algebra [electronic only]