Koukouloyannis, Vassilis Existence of multibreathers in chains of coupled one-dimensional Hamiltonian oscillators. [electronic resource] - Physical review. E, Statistical, nonlinear, and soft matter physics Dec 2002 - 066602 p. digital Publication Type: Journal Article ISSN: 1539-3755 Standard No.: 10.1103/PhysRevE.66.066602 doi