Footnotes
A. Newell:Near integrable systems, nonlinear tunnelling and solutions in slowly changing media, inNonlinear Evaluation Equations Solvable by the Spectral Transform, edited byF. Calogero (London, 1978);F. Calogero andA. Degasperis: preprint, No. 66 (1978), Istituto di Fisica del-l'Università, Roma, submitted toLett. Nuovo Cimento.
F. Calogero andA. Degasperis: preprint, No. 73 (1978), Istituto di Fisica dell'Università, Roma, submitted toLett. Nuovo Cimento.
M. J. Ablowitz:SIAM Rev.,19, 663 (1977);M. J. Ablowitz andJ. F. Ladik:Studies in Appl. Math.,55, 213 (1976).
K. M. Case:Journ. Math. Phys.,14, 916 (1973);K. M. Case andM. Kac:Journ. Math. Phys.,14, 594 (1973).
H. S. Carslaw:Theory of Fourier Series and Integrals (New York, N. Y., 1930).
M. J. Ablowitz andJ. F. Ladik:Journ. Math. Phys.,16, 598 (1975);M. J. Ablowitz:Studies in Appl. Math.,58, 17 (1978).
S. C. Chiu andJ. F. Ladik:Journ. Math. Phys.,18, 690 (1977).
See the paper byF. Calogero: inStudies in Mathematical Physics (Essays in Honor of ValentineBargmann), edited byE. H. Lieb, B. Simon andA. S. Wightman (Princeton, N. J., 1976).
Due to the even character of the transmission coefficients (1.2), as shown byM. J. Ablowitz andJ. F. Ladik:Journ. Math. Phys.,17, 1011 (1976)
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Levi, D., Ragnisco, O. Extension of the spectral-transform method for solving nonlinear differential difference equations. Lett. Nuovo Cimento 22, 691–696 (1978). https://doi.org/10.1007/BF02813707
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DOI: https://doi.org/10.1007/BF02813707