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APA Citation
Xie, H., Li, G., Chu, W., Zeng, B., Yao, J., Jing, C., Li, Z., & Cheng, Y. (n.d.). backward nitrogen lasing actions induced by femtosecond laser filamentation: influence of duration of gain. New journal of physics, 17, . http://access.bl.uk/ark:/81055/vdc_100066001939.0x00003d