“Investigating Risk Factors in Tender Process Effecting on Contract Implementation Stage in Onshore Oil and Gas Production Facilities Projects”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT 5, no. 12 (December 20, 2019): 08–27. Accessed May 7, 2024. https://ijerat.com/index.php/ijerat/article/view/169.