Notice of Retraction: Efficiency evaluation of China's grain production using data envelopment analysis

Author(s):  
Dayou Cheng
2021 ◽  
Vol 19 (3) ◽  
pp. 437-445
Author(s):  
Tiago dos Santos Antunes ◽  
Fabio Sartori Piran ◽  
Gustavo Silva Stefano ◽  
Daniel Pacheco Lacerda

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