Template:Cite EB15/title check

{{documentation|content= Title validation: If title is absent, both volume and page number must be present. This routine returns:
 * the title, if it is present;
 * a concatenated volume + page-number string (e.g., ), if both are present and title is absent;
 * the empty string, in all other cases (indicating an invalid combination was found).

Parameters
There are three required named parameters:,  , and.

Examples
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