Check out some options how docx files might be converted to ris format.
RIS files are special ASCII text files that contain citation references. You can use a text from any source (TXT, PDF, DOC/DOCX etc.) and simply copy and paste (or import if possible) relevant text data to a program that can generate RIS citations, like the Reference Manager from Thomson Reuters or similar programs. So this is more like a workflow than actual conversion, but doable.
Unfortunately, there is no detailed software record in the database for this conversion.
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