  We consider some soliton equations with self-consistent sources. A brief
review of main SESCS is presented. In particular we construct the Heisenberg
ferromagneic equation with self-consistent sources (HFESCS) which is
integrable. The corresponding Lax representation is presented. Some properties
of HFESCS are analyzed. The relation between soliton equations with
self-consistent potentials and soliton equations with self-consistent sources
is studied.
