<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I noticed a lot of research on this topic on Prof. Schiffmans'<span></span> blog. </blockquote><div><br></div><div dir="ltr">
<span style="font-family:'.HelveticaNeueUI';white-space:nowrap"><a href="http://lawrenceschiffman.com/blog/">http://lawrenceschiffman.com/blog/</a></span></div>