Darboux Transformations from Reductions of the KP Hierarchy
  The use of effective Darboux transformations for general classes Lax pairs is discussed. The general construction of ``binary'' Darboux transformations preserving certain properties of the operator, such as self-adjointness, is given. The classes of Darboux transformations found include the multicomponent BKP and CKP reductions of the KP hierarchy. 
J J C NIMMO(Department of Mathematics, University of Glasgow, Glasgow   G12 8QW, Scotland)