I am planning to compile a systematic literature review. I have downloaded .csv file of a collection of papers and their respective bibliometric information (authors' names and affiliations, year of publication, keywords, references, etc.). To conduct a network analyses of this acquired data in Gephi, I need to import different spreadsheets for making nodes and edges tables. The .csv file downloaded may be used as it is for nodes (if I'm not wrong). However, I am clueless about how to make edges file from this parent .csv file to conduct different types of network analyses (e.g., based on keywords, citations, research areas, etc.). Any guidance in this regard will be highly appreciated.