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Continue to ChatZagreb Indices of Double Graphs - https://avesis.uludag.edu.tr/yayin/ddbbe00d-3a9c-41d3-b9aa-027324c840ec/zagreb-indices-of-double-graphs
Zagreb Indices of Double Graphs - https://avesis.uludag.edu.tr/yayin/ddbbe00d-3a9c-41d3-b9aa-027324c840ec/zagreb-indices-of-double-graphs