Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Jörg Fliege and Ralf Werner,Robust multiobjective optimization & applications in portfolio optimization,European Journal of Operational Research,0377-2217,Elsevier BV,2014-04,234,2,422-433,https://cir.nii.ac.jp/crid/1361137046367396480,https://doi.org/10.1016/j.ejor.2013.10.028