Guoliang Yang, Per Ahlgren, Liying Yang, Ronald Rousseau, Jie Lan Ding. Using multi-level frontiers in DEA models to grade countries/territories. J. Informetrics, 10(1):238-253, 2016. [doi]
@article{YangAYRD16,
title = {Using multi-level frontiers in DEA models to grade countries/territories},
author = {Guoliang Yang and Per Ahlgren and Liying Yang and Ronald Rousseau and Jie Lan Ding},
year = {2016},
doi = {10.1016/j.joi.2016.01.008},
url = {http://dx.doi.org/10.1016/j.joi.2016.01.008},
researchr = {https://researchr.org/publication/YangAYRD16},
cites = {0},
citedby = {0},
journal = {J. Informetrics},
volume = {10},
number = {1},
pages = {238-253},
}