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Using multi-level frontiers in DEA models to grade countries/territories [期刊论文]
JOURNAL OF INFORMETRICS, 2016, 卷号: 10, 期号: 1, 页码: 238-253
Yang, Guoliang;  Ahlgren, Per;  Yang LY(杨立英);  Rousseau, Ronald;  Ding JL(丁洁兰)
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Tracing database usage: Detecting main paths in database link networks [期刊论文]
Journal of Informetrics, 2015, 期号: 9, 页码: 1–15
Qi Yu; Ying Ding; Min Song; Sungjeon Song; Liu JH(刘建华)
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