Columbia subject headings:
Differential equations, Partial--Congresses.
Hamiltonian systems--Congresses.
Nonlinear theories--Congresses.
Solitons--Congresses.
Harvard subject headings:
Differential equations, Partial--Congresses.
Hamiltonian systems--Congresses.
Nonlinear theories--Congresses.
Solitons--Congresses.
Princeton subject headings:
Differential equations, Partial--Congresses.
Hamiltonian systems--Congresses.
Nonlinear theories--Congresses.
Solitons--Congresses.