1.
Kairies H-H. On continuous and residual spectra of operators connected with iterative functional equations. Ann. Univ. Paedagog. Crac. Stud. Math. [Internet]. 2006 Jun. 3 [cited 2026 Oct. 30];5:51-7. Available from: https://studmath.uken.krakow.pl/article/view/13292