%0 Journal Article
%A Jirofti, Amirsina, Najafi, Amirabbas
%T Investment portfolio optimization using value at risk under credibility theory with Z-numbers approach
%J Financial Engineering and Portfolio Management
%V 8
%N 30
%P 95-113
%D 2017
%R 
%U https://sanad.iau.ir/fa/Article/1079407