Error - DOI Naming Authority [MDOI-JR-07-08-2009-90-7-8-C1-0221-0363-101019-200904816[pii]] Not Found

The DOI you requested --

MDOI-JR-07-08-2009-90-7-8-C1-0221-0363-101019-200904816[pii]

-- cannot be found in the Handle System.

Possible reasons for the error are:

• the DOI has not been created
• the DOI is cited incorrectly in your source
• the DOI does not resolve due to a system problem

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