Measuring LBM

I once read about how to measure LBM (I think it was on 5 or 7 different places on the body, using some complex formula to get to the result) but I cannot find the link again. Could someone point out the direction or resume how to measure LBM? Thanks.

If you don´t want to use the searchengine here are the links.

www.testosterone.net/articles/209body.html

Thanks for indicating the link, I found it.