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Nili, M., & Maleki, M. (2006). INFORMAL ECONOMY: CAUSES, IMPACTS ON THE FORMAL SECTOR AND METHODS OF ESTIMATION. Sharif Journal of Industrial Engineering & Management, Vol.22(36), 45-56.
Nili, M., & Maleki, M. "INFORMAL ECONOMY: CAUSES, IMPACTS ON THE FORMAL SECTOR AND METHODS OF ESTIMATION", Sharif Journal of Industrial Engineering & Management, Vol.22, 36, 2006, 45-56.
Nili M., Maleki M. (2006). 'INFORMAL ECONOMY: CAUSES, IMPACTS ON THE FORMAL SECTOR AND METHODS OF ESTIMATION', Sharif Journal of Industrial Engineering & Management, Vol.22(36), pp. 45-56.
M. Nili & M. Maleki, "INFORMAL ECONOMY: CAUSES, IMPACTS ON THE FORMAL SECTOR AND METHODS OF ESTIMATION," Sharif Journal of Industrial Engineering & Management, Vol.22 36 (2006): 45-56,
Nili M., Maleki M. INFORMAL ECONOMY: CAUSES, IMPACTS ON THE FORMAL SECTOR AND METHODS OF ESTIMATION. SJIE. 2006;Vol.22(36):45-56 (In Persian).