Atighi, I. , Soleimannejad, J. , Akbarinasab, A. , Moradpour, S.. "Providing a Practical Model to Reduce Maintenance Costs: A Case Study in Golgohar Company". World Academy of Science, Engineering and Technology, Open Science Index 155, International Journal of Economics and Management Engineering (2019), 13(11), 1457 - 1460.