initial-scale=1"> Error: Not a DOI
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Not a DOI

The resolution service at https://doi.org resolves DOIs. You have attempted to resolve 31340477,
which is not a DOI.

31340477 may be a Handle (DOIs are a special sort of Handle). If 31340477 is a valid Handle you should be able to resolve it at https://hdl.handle.net.

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