المؤلفون: Song, Xiaolong, Ren, Hengyang, Jiao, Xuemei, Shang, Fangfang

المصدر: IOP Conference Series: Earth and Environmental Science ; volume 208, page 012030 ; ISSN 1755-1315

الاتاحة: http://dx.doi.org/10.1088/1755-1315/208/1/012030
http://stacks.iop.org/1755-1315/208/i=1/a=012030/pdf
http://stacks.iop.org/1755-1315/208/i=1/a=012030?key=crossref.257a62dc7da58b08b1eed6a47b4b7a5d