Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 15 references without a DOI — listed, not checked
no DOI — not checkedBuher Aoseer, Zhang Dongwei, and Liu Li (1995) Regional environmental differentiation and regional safety threshold of soil selenium [J]. Acta Pedologica Sinica. 32, 186–193 (in Chinese with English abstract).
no DOI — not checkedCheng Bairong, Ju Shanjian, Yue Shurong et al. (1985) Selenium in soil of northeastern China [J]. Acta Pedologica Sinica. 17, 55–61 (in Chinese with English abstract).
no DOI — not checkedCheng Daizhong, Li Jiyun, and Ren Shangxue (1985) Selenium to ecoenvironment of Shaanxi Province [J]. Acta Geography Sinica. 40, 307–322.
no DOI — not checkedCheng Jingyi and Mei Ziqing (1981) Preliminary survey on the selenium poisoning area in Ziyang, Hubei [J]. Shaanxi Agrosciences. 3, 1–6 (in Chinese with English abstract).
no DOI — not checkedCooperation Group of Background Level in Soils, Chinese Academy of Sciences (1979) Background level of some elements in soils of Beijing and Nanjing regions [J]. Acta Pedologica Sinica. 16, 319–328 (in Chinese with English abstract).
no DOI — not checkedDing Zhenghua (2000) A Study on the Mineralogy and Geochemistry of the Coals with High-As Contents [D]. pp.21–25. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang (in Chinese).
no DOI — not checkedEnvironment Monitoring Center of China (1990) Background Level of Elements in Soils of China. Beijing [M]. pp.28–87. Chinese Environment Science Publishing House, Beijing (in Chinese).
no DOI — not checkedLiu Peidi (1993) Selenium Source and Its Comprehensive Utilization [M]. pp.16–20. Chinese Science and Technology Publishing House, Beijing (in Chinese).
no DOI — not checkedMao Dajun, Su Hongcan, Yan Liangrong et al. (1990) A study on the epidemiology of selenium poisoning in West Hubei [J]. Chinese Journal of Endemiology. 9, 311–314 (in Chinese with English abstract).
no DOI — not checkedTan Jian’an and Huang Yijian (1991) Selenium in geo-ecosystem and its relation to endemic diseases in China [J]. Water Air and Soil Pollut. 1, 57–68 (in Chinese with English abstract).
no DOI — not checkedWang Shijie, Ji Hongbing, and Sun Chengxing (2001) Preliminary study on REE distribution characteristics in the dolomitite weathering profile in Pingba County, Guizhou [J]. Chinese J. of Geology. 36, 474–480.
no DOI — not checkedYang Guangqi (1989) Study on the best selenium quantity absorbed in human body [J]. Chinese Journal of Endemiology. 8, 273–277 (in Chinese with English abstract).
no DOI — not checkedYang Guangqi, Zhou Ruihua, Ying Shian et al. (1985) Study on the needful quantity of selenium to Chinese people [J]. Hygienic Research. 14, 24–28 (in Chinese with English abstract).
no DOI — not checkedZhang Xiaoping and Zhang Yuxiao (2000) Content and distribution of selenium in soils of Tibet [J]. Acta Pedologica Sinica. 37, 558–562 (in Chinese with English abstract).
no DOI — not checkedZhu Jianming, Zheng Baoshan, Mao Dajun et al. (2001) Landscape geochemistry of selenium in Yutangba mini-landscape, Enshi, Hubei Province, China [J]. Geochimica. 29, 43–49 (in Chinese with English abstract).
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