%0 Book %Y Maier-Paape, Stanislaus %Y Zhu, Qiji %T Special Issue "Portfolio Theory, Financial Risk Analysis and Applications" %J Risks : open access journal %@ 2227-9091 %C Basel %I MDPI %M RWTH-2025-02760 %P 1 Online-Ressource %D 2025 %F PUB:(DE-HGF)3 %9 Book %U https://publications.rwth-aachen.de/record/1006839