Ren, S., Liu, Y., Yang, X., Tong, D., & Ren, G. Extended Ultimate-Pit-Limit Methodology for Optimizing Surface-to-Underground Mining Transition in Metal Mines. Wiley.
Chicago Style (17th ed.) CitationRen, Si-Tong, Yang Liu, Xin-Yi Yang, Ding-Gui Tong, and Gao-Feng Ren. Extended Ultimate-Pit-Limit Methodology for Optimizing Surface-to-Underground Mining Transition in Metal Mines. Wiley.
MLA (9th ed.) CitationRen, Si-Tong, et al. Extended Ultimate-Pit-Limit Methodology for Optimizing Surface-to-Underground Mining Transition in Metal Mines. Wiley.
Warning: These citations may not always be 100% accurate.