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APA Citation
Lu, Z., Kim, D., Wu, W., Li, W. (., & Du, D. (Eds.) (2015). Combinatorial optimization and applications : 9th International Conference, COCOA 2015, Houston, TX, USA, December 18-20, 2015, Proceedings. Cham : Springer. http://access.bl.uk/ark:/81055/vdc_100071247311.0x000001