> You must have HTT log in. <http://httrack.kauler.com/help/Authentication>
and
> don't forget to filter out the log-out url

What ever I try, I cannot get a working hts-post from WinHTTrack with the url
catcher. It works for other logins though, so I guess this site is a bit more
sophisticated, not to crawl it too easy.

I give up, I won't spend another day with endless experiments, without exatly
knowing what to do and what happens.
Without login there is no download, so no chance to get those pdf
automatically, I must do it by hand.
By the way, I could have all downloaded them maybe 5 times in the meanwhile ;)