<p>It was in that Polytechnic articles above</p>
<p><a href=“http://www.poly.rpi.edu/article_view.php3?view=5541&part=1[/url]”>http://www.poly.rpi.edu/article_view.php3?view=5541&part=1</a>
and also
<a href=“http://www.poly.rpi.edu/article_view.php3?view=5463&part=1[/url]”>http://www.poly.rpi.edu/article_view.php3?view=5463&part=1</a></p>