Please refer to the link I provided. ISBN codes are all typed in the same way (as far as I could test it) but only a few of them are converted to links. I cannot figure if this is a bug with the ISBNs entered or the parser.
Version: unspecified
Severity: enhancement
URL: http://fa.wikipedia.org/wiki/%D9%85%D8%B5%D8%B7%D9%81%DB%8C_%DA%A9%D9%85%D8%A7%D9%84_%D9%BE%D9%88%D8%B1%D8%AA%D8%B1%D8%A7%D8%A8