Fig. 2.

A: Global production in CA-R. Countries with a dark blue color are the most productive. Countries outside the blue category have not made any contributions to research in this particular area. This figure was generated using the Bibliometrix application and the BibTex data file. B: Sankey diagram. AU: authors; AU_CO: country of the authors; SO: sources. The thickness of the lines connecting authors from different countries represents the number of papers they have co-authored. The thickness of the lines connecting countries and sources represents the number of papers from each country that have been published in each source. Each rectangle represents an author, country, or source. The size of the rectangle represents the importance of nodes in the network. This figure was generated using the Bibliometrix application and the BibTex data file. C: Co-authorship networks among countries was analyzed using VOSviewer, where countries were represented as nodes and collaborations as links. Based on TLS values, France emerged as the leading collaborative country in CA-R. D: Single and multiple country publications. The orange color in the bars represents the multiple country publications. E: Highly cited countries.