%0 Journal Article
%A Ren, Tiantian
%A Zhou, Zhongbao
%A Xiao, Helu
%T Estimation of portfolio efficiency considering social responsibility: evidence from the multi-horizon diversification DEA
%J RAIRO. Operations Research
%D 2021
%P 611-637
%V 55
%N 2
%I EDP-Sciences
%U https://www.numdam.org/articles/10.1051/ro/2021026/
%R 10.1051/ro/2021026
%G en
%F RO_2021__55_2_611_0