SOME NEW RESULTS ON THE BLASZAK-MARCINIAK 3-FIELD AND 4-FIELD LATTICES

By using the bilinear form of the 3-field Blaszak-Marciniak lattice and its corresponding Backlund transformation, a series of rational solutions are obtained. Starting from the bilinear form for the 4-field Blaszak-Marciniak lattice, a new lattice is found which has soliton solutions.