Butenin, N.V.
Elements of the theory of nonlinear oscillations
Blaisdell, 1965
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Schetzen, Martin
The volterra and wiener theories of nonlinear systems
John Wiley & Sons, 1980
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Bellman, Richard
Methods of nonlinear analysis vol. II
Academic Press, 1973
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Nonlinear modeling and forecasting : proceedings of the Workshop on nonlinear modeling and forecasting, held September, 1990 in Santa Fe, New Mexico; Vol. 12
edited by Martin Casdagli and Stephen Eubank
Addison-Wesley , 1992
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Atherton, Derek P.
Stability of nonlinear systems
John Wiley & Sons, 1981
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