Bug Report ID: 1747639374 DOI import fails on non-ascii author name paper

When I try to import the following article:

http://www.springerlink.com/content/pq7k2q1163583125/

I get an error "Could not save item: An error occurred while saving this item."

Note that the names of the authors are J. Vlček and L. Lukšan.

Steps to reproduce:

1) Go to http://www.springerlink.com/content/pq7k2q1163583125/
2) Click on save as DOI

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