RT Article T1 Is it costly to introduce SRI into Islamic portfolios? JF Islamic economic studies VO 25 IS 1 SP 23 OP 54 A1 Elias, Erragragui LA English YR 2017 UL https://ixtheo.de/Record/1067587136 K1 socially responsible investing (SRI) K1 Islamic investing K1 ESG scorings K1 Corporate social responsibility (CSR) K1 portfolio management K1 Aufsatz in Zeitschrift