<http://schema.org/url>
<http://www.businessweek.com/articles/2014-06-20/clayton-christensen-responds-to-new-yorker-takedown-of-disruptive-innovation>
<http://www.businessweek.com/printer/articles/208701-clayton-christensen-responds-to-new-yorker-takedown-of-disruptive-innovation>