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Yang Wang, Lijuan Wang, Tianwei Zhang and Qingdong Zhou, 2013. Optimization Model of Extension of Classification Station. Journal of Applied Sciences, 13: 4014-4017.
DOI: 10.3923/jas.2013.4014.4017
URL: https://scialert.net/abstract/?doi=jas.2013.4014.4017
DOI: 10.3923/jas.2013.4014.4017
URL: https://scialert.net/abstract/?doi=jas.2013.4014.4017