Engineering article on which I relied

Along with 4. Aircraft impact damage, Tomasz Wierzbicki, Liang Xue, Meg Hendry-Brogan, linked from here:

http://web.mit.edu/civenv/wtc/

I used the below article in my first blog post

http://ningens-blog.blogspot.com/2006/11/911-pound-gorilla-in-catos-room.html

JPEGs, which can be clicked on to enlarge and read or print, are posted for fair use only under the U.S. Code. I promised to do this a while back but have been busy.

This is the article which I think Eric Salter, and Steven Jones in citing Eric Salter, should have acknowledged, as I stated here:

http://ningens-blog.blogspot.com/2007/01/does-nist-prove-no-planes-and-has-jones.html

The equations are Greek to me, as I have made clear from the beginning, so comments and questions should be limited to English. Thank you.