Variation of permafrost on fill embankments along Qinghai-Tibet railway
HAN Longwu, YANG Yinhai, DAI Lusheng, ZHANG Fang, CHENG Jia
China Safety Science Journal . 2018, (S2): 6 -10 .  DOI: 10.16265/j.cnki.issn1003-3033.2018.S2.002