%0 Journal Article %A Swain, Pulak %A Ojha, Akshay Kumar %T Bi-level optimization approach for robust mean-variance problems %J RAIRO. Operations Research %D 2021 %P 2941-2961 %V 55 %N 5 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ro/2021129/ %R 10.1051/ro/2021129 %G en %F RO_2021__55_5_2941_0