A tool by Rod Page, code on GitHub
This tool is inspired by SourceMD and works in much the same way. Enter one or more identifiers, one per line. The tool checks whether they already exist in Wikidata, if not it will create Quickstatements for them so you can add them yourself. If a work is already in Wikidata but is missing an identifier we know about, the tool generates statements to add it.
You can enter:
10.24199/j.mmv.2004.61.3biostor:192990bhlpart:202055There is also another tool, Cites Works which adds citation links to works with DOIs.