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The 10 references without a DOI — listed, not checked
no DOI — not checkedZhidaoZhang, lianWang. Modern Tunnelling Technology. 2004, 41(3). (In Chinese).
no DOI — not checkedDong-yongZhou, Qing-linLuo, et al. Construction Technology, 2008, 37(2): 87-89. (In Chinese).
no DOI — not checkedJianxunChen, YongjieZan. China Journal of Highway and Transport, 2011(4). (In Chinese).
no DOI — not checkedLuKangcheng, JiangMingcai, et al. New technologies of leakage prevention in highway tunnels in China[C] / International Tunnel Seminar Highway Developments Technique Exchanges Conference. Beijing: China Communications Press, 2002: 237-243. (In Chinese).
no DOI — not checkedBaoshuGuan. Technology Points Tunnel Maintenance Management [M] . Beijing: China Communications Press, 2004. (In Chinese).
no DOI — not checkedJianxunChen, JianxunZhang, et al. Journal of Chang an University(Natural Science Edition), 2006(4). (In Chinese).
no DOI — not checkedJianxunChen. Journal of Chang an University(Natural Science Edition), 2006(4). (In Chinese).
no DOI — not checkedKangchengLu et al. Waterproofing and Drainage Engineering Guide[M]. Beijing. China Communications Press, 2005. (In Chinese).
no DOI — not checkedThe Professional Standards of People's Republic of China. JTG D70-2004 Code for Design of Road Tunnel [S]. Beijing: China Communications Press, 2004. (In Chinese).
no DOI — not checkedThe Professional Recommended Standards of People's Republic of China. JTG D70-2010 Guidelines for Design of Highway Tunnel[S]. Beijing: China Communications Press, 2010. (In Chinese).
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