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Ahadzadeh Namin, M., & Iravani, Z. (2011). Sub units chain in the DEA. International Journal of Industrial Mathematics, 3(4), 317-324.
M. Ahadzadeh Namin; Z. Iravani. "Sub units chain in the DEA". International Journal of Industrial Mathematics, 3, 4, 2011, 317-324.
Ahadzadeh Namin, M., Iravani, Z. (2011). 'Sub units chain in the DEA', International Journal of Industrial Mathematics, 3(4), pp. 317-324.
Ahadzadeh Namin, M., Iravani, Z. Sub units chain in the DEA. International Journal of Industrial Mathematics, 2011; 3(4): 317-324.