Erji Du Lin Zhao 0013 Defu Zou Ren Li Zhiwei Wang Xiaodong Wu Guojie Hu Yonghua Zhao Guangyue Liu Zhe Sun Soil Moisture Calibration Equations for Active Layer GPR Detection - a Case Study Specially for the Qinghai-Tibet Plateau Permafrost Regions. 605 2020 12 Remote. Sens. 4 https://doi.org/10.3390/rs12040605 https://www.wikidata.org/entity/Q121888983 db/journals/remotesensing/remotesensing12.html#DuZZLWWHZLS20