TY - JOUR AU - Kreins, Philipp AU - Maier-Paape, Stanislaus AU - Zhu, Qiji Jim TI - Quick Introduction into the General Framework of Portfolio Theory JO - Risks : open access journal VL - 12 IS - 8 SN - 2227-9091 CY - Basel PB - MDPI M1 - RWTH-2025-02537 SP - 132 PY - 2024 LB - PUB:(DE-HGF)16 ; PUB:(DE-HGF)7 UR - <Go to ISI:>//WOS:001304651800001 DO - DOI:10.3390/risks12080132 UR - https://publications.rwth-aachen.de/record/1006556 ER -