wn_conj_gradient_method(3) on Linux
The text 711664c7c657, as Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink) shipped it. The page shows this text now.
conjugate directions function minimization package