I found a discography at:
http://hyperreal.com:70/0/music/artists/atom_heart/discog
Rather intimidating amount of stuff.
I'd been collecting the Lassigue Bendthaus material for 3-4 years,
recently discovered this is the same artist as Atom Heart. Despite
grabbing everything I could, seems I've missed a good 2/3rds of it!
Anyway, I'd be grateful to anyone who can help track down more of this
stuff.