This (with the links to the dissertion) gives a pretty thourough background: http://www.zephoria.org/thoughts/archives/2007/06/24/viewing_america.html http://w

This (with the links to the dissertion) gives a pretty thourough background: http://www.zephoria.org/thoughts/archives/2007/06/24/viewing_america.html http://www.zephoria.org/thoughts/archives/2007/06/24/viewing...