Kuo-Ping C (1997). “A Note on “A Discussion of Testing DMUs’ Returns to Scale”; by Zhu and Shen.” EJOR 97(3): 597-599.
Kuo-Ping C (1997). “A Note on “A Discussion of Testing DMUs’ Returns to Scale”; by Zhu and Shen.” EJOR 97(3): 597-599.