B. A. Huberman and J. P. Crutchfield, “Chaotic states of anharmonic systems in periodic fields,” Physical Review Letters 43 (1979), pp. 1743–1747; D. D’Humieres, M. R. Beasley, B. A. Huberman, and A. Libchabet, “Chaotic states and routes to chaos in the forced pendulum,” Physical Review A 26 (1982), pp. 3483–3496; N. F. Pedersen and A. Davidson, “Chaos and noise rise in Josephson junctions,” Applied Physics Letters 39 (1981), pp. 830–832; R. L. Kautz and R. Monaco, “Survey of chaos in the RF-biased Josephson junction,” Journal of Applied Physics 57 (1985), pp. 875–889.
