Fig. 6: The knowledge diffusion path of publications in sustainable mobility and transport.
From: The landscape, trends, challenges, and opportunities of sustainable mobility and transport
a Global standard main path. b Forward local main path. c Backward local main path. Nodes represent key publications on the diffusion path. Each node is labeled with the paper’s first author and publication year. Arrows represent the information flow of publications, and the size of arrows represents the importance of information flow. Orange and blue nodes indicate that the target node does not appear in the global standard main path.
