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APA Citation
Sun, F., Lun, X., Liu, X., Mo, L., Li, R., Zhang, H., Chen, J., Cao, Y., Shi, F., & Yu, X. (2016). analysis of organic and elemental carbon in heating and non-heating periods in four locations of Beijing. Environmental technology, 37(1), 121–128. http://access.bl.uk/ark:/81055/vdc_100028619175.0x00001d