@article{RO_2021__55_2_611_0,
     author = {Ren, Tiantian and Zhou, Zhongbao and Xiao, Helu},
     title = {Estimation of portfolio efficiency considering social responsibility: evidence from the multi-horizon diversification {DEA}},
     journal = {RAIRO. Operations Research},
     pages = {611--637},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {55},
     number = {2},
     doi = {10.1051/ro/2021026},
     mrnumber = {4241818},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/ro/2021026/}
}