References -- I. Quantum Systems and Classical Behaviour -- 1. Some physical models and nonlinear differential equations -- 2. Physically interesting nonlinear differential equations -- II. Some Exact Results in One-Dimensional Space -- 3. The Nonlinear Schrรถdinger equation and the Landau-Lifshitz equation -- 4. Nonlinear Schrรถdinger equation with U(p,q) internal symmetry and the SG equation -- III. Noncompact Symmetries and Bose Gas -- 5. Dynamical symmetry and generalized coherent states -- 6. Bose gas, integrable NSE and Landau-Lifshitz models -- 7. ?6theory and Bose-drops -- IV. Soliton-Like Solutions in One-Dimension -- 8. The class of soliton solutions to the vector version of NSE with self-consistent potentials -- 9. The existence of soliton-like solutions -- 10. Soliton stability -- V. Phenomenology of D = 1 Solitons -- 11. Dynamics of the formation and interaction of plane solitons -- 12. Structural stability and pinning of solitons -- 13. Dynamical structure factors of soliton gas -- VI. Many-Dimensional Solitons -- 14. Existence and stability -- 15. Pulsons and Q-solitons -- 16. Interaction of Q-solitons