Functional correlations between the efficiency indicators of investments
Branislav Marić1, Jelena Ćirić1*, Vladimir Mitrović2 and Mihailo RovÄanin3
1Department for Industrial Engineering and Management, Faculty of Technical Sciences, University of Novi Sad, Republic of Serbia.
2Faculty of Mining and Geology, University of Belgrade, Republic of Serbia.
3Coal Mine, Pljevlja, Republic of Montenegro.
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