How to use of meta characters in search string in XPath in perl

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use XML::LibXML;

...
{
    print $chapter_node->findvalue('locator[@href ="/book/isbn/979-0-4
+444-1000-17/book-part/chapter/bk444444ch1?releaseStatus=RELEASED"]/@t
+itle');    
}

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print $chapter_node->findvalue('locator[@href ="/*releaseStatus=RELEAS
+ED"]/@title');    
}

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<book>
<contents>
...
</locator>
</contents>
</book>

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