There are different tools (e.g., R, BibExcel) for science mapping. The tools often help in extracting the highly cited references (with frequency count). I recently used one of them for practice and noticed several duplicates of cited references. It was challenging to determine the unique frequency count of a particular reference. I found the following issues:
1. Missing authors.
2. Short names of journals.
3. Format of text (capitalization)
4. Inclusive DOIs.
These were the common reasons that made the reference duplicate. However, I used Regular Expressions to fix these problems. But I am looking for a distinctive method or tool. Kindly suggest.
Remove Duplicates
https://aub.edu.lb.libguides.com/Mendeley/RemoveDuplicates
Duplicates
De-duplication tool
https://library-guides.ucl.ac.uk/endnote/duplicates
Thank you sir for replying. It works in almost every reference management tool. But the situation is something like the attached file (duplicate.png). If any researcher wants to show top-ten or top-n cited references, the researcher could miss the original frequency of cited references.
Best regards.