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Yunning Cao, Weiguo Liu, Peter E. Sauer, Zheng Wang, Zheng-hua Li, An evaluation of alumina reaction tube conditioning for highprecision 2H/1H isotope measurements via gas chromatography/ thermal conversion/isotope ratio mass spectrometry, Rapid Communications in Mass Spectrometry. 2012, 26 (22): 2577-2583.
2. Weiguo Liu, Zheng Wang, Linlin Cui, Peter E. Sauer, Yunning Cao, Variation of compound-specific hydrogen isotope ratios under changing temperature program in gas chromatography/thermal conversion/isotope ratio mass spectrometry, Rapid Communications in Mass Spectrometry. 2012, 26 (16), 1746-1752.
3. Weiguo Liu, Hong Yang, Yunning Cao, Youfeng Ning, Li Li, Jie Zhou, Zhisheng An. Did an extensive forest ever develop on the Chinese Loess Plateau during the past 130 ka?: a test using soil carbon isotopic signatures. 2005, Applied Geochemistry 20(3): 519-527.
4. Liu,Weiguo,Feng,Xiahong,Ning,Youfeng,Zhang,Qingle,Cao,Yunning,An,Zhisheng. δ13C variation of individual C3 and C4 grasses species along an Asian monsoon rainfall gradient in northwestern China. Global Change Biology 2005, (11): 1094-1100.
5. Liu, W. G,Ning, Y. F.,An, Z. S.,Wu, Z. H.,Lu, H. Y.,Cao, Y. N. . Carbon isotopic composition of modern soil and paleosol as a response to vegetation change on the Chinese Loess Plateau. Science in China Series D-Earth Sciences, 2005, 48(1): 93-99.
6. 曹蕴宁,刘卫国,宁有丰,张庆乐,王政.土壤有机碳同位素样品制备过程的影响因素讨论.地球化学,2005,34(4),395~404.
7. 曹蕴宁,刘卫国,宁有丰,王政,张庆乐. 氧化条件对样品有机碳同位素测定的影响因素讨论.地球学报,2005,26(增刊): 55-56.
8. 姚远,赵江涛,曹蕴宁,王政,刘卫国.脂肪酸甲酯碳同位素测定值的校正方法对比研究.质谱学报,2012,33(6):270-277.
9. 刘卫国,宁有丰,安芷生,吴振海,鹿化煜,曹蕴宁.黄土高原现代土壤和古土壤有机碳同位素对植被的响应.中国科学D辑,2002,32(10),830~836.