In addition to the already listed sources, here is one more that I found very helpful.
"The Film Developing CookBook, Anchell & Troop"
For AgfaPan 400 at ASA 200 try;
Edwal FG-7 (1+3) @ 6 min.
Edwal FG-7 (1+15) @ 17 min.
Kodak XTOL (1+1) ASA 100/200 @ 10.5 min.
Kodak XTOL (1+2) ASA 100/200 @ 13.5 min.
Another possibility is included in the pdf I've attached, if you have any Rodinal available.