Yeah, same for me, the links don't work, and then most of the links past the research tab don't work either. ( I clicked on navigation, then clicked on various links to articles, most are dead)

I fixed Dave's links. Try 'em again!

If you just want to find more material on this then searching for 'steering behaviors', 'boids', and 'flocking' should turn up plenty of material.

Unfortunately, Craig's great Java apps to show all the different behaviors don't seem to be playing anymore in browsers. That's only come up in the past month or so, I believe.