1.Lifetime properties of a cumulative shock model with a cluster structure
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2.Optimal configuration of a green product supply chain with guaranteed service time..
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3.Micro-Study of the Evolution of Rural Settlement Patterns and Their Spatial Associ..
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4.Matheuristic for a two-echelon capacitated vehicle routing problem with environmen..
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5.Analysis of the Influencing Factors of Migrant Worker Social Insurance in Lanzhou
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