Sustainable Logistics: Bibliometric Analysis, Research Trend and Knowledge Taxonomy Rui Ren 1, Wanjie Hu 2,* , Jianjun Dong 2,*, Bo Sun 2, Yicun Chen 3 and Zhilong Chen 1 1 College of Defense Engineering, Army Engineering University of PLA, Nanjing 210042, China; renrui0801@163.com (R....