The critical exponent of operators with constrained spectral radius Zdeněk Dostál (1978) Commentationes Mathematicae Universitatis Carolinae
The product of relatively regular operators Jaromír J. Koliha (1975) Commentationes Mathematicae Universitatis Carolinae
The solution by iteration of a composed K-positive definite operator equation in a Banach space. Aneke, S.J. (2010) International Journal of Mathematics and Mathematical Sciences
Triangularization of some families of operators on locally convex spaces Edvard Kramar (2001) Commentationes Mathematicae Universitatis Carolinae Some results concerning triangularization of some operators on locally convex spaces are established.