Ma, W.X.; Fuchssteiner, B.; Oevel, W. - In: Physica A: Statistical Mechanics and its Applications 233 (1996) 1, pp. 331-354
A 3 × 3 matrix spectral problem for AKNS soliton hierarchy is introduced and the corresponding Bargmann symmetry … constraint involving Lax pairs and adjoint Lax pairs is discussed. An explicit new Poisson algebra is proposed and thus the …