NECESSARY CONDITIONS FOR INTEGRABILITY OF NONLINEAR PDES

[1] CALOGERO F, 1987, UNPUB INVERSE PROB 2, V3, P229

[2] Calogero F., 1982, SPECTRAL TRANSFORM S, V1

[3] CALOGERO F, 1982, UNPUB SPECTRAL TRANS, V2

[4] Eckhaus W., 1981, N HOLLAND MATH STUDI, V50

[5] Taniuti T., 1983, NONLINEAR WAVES

[6] TANIUTI T, 1974, SUPPL PROG THEOR PHY, V55

[1] CALOGERO F, 1987, UNPUB INVERSE PROB 2, V3, P229

[2] Calogero F., 1982, SPECTRAL TRANSFORM S, V1

[3] CALOGERO F, 1982, UNPUB SPECTRAL TRANS, V2

[4] Eckhaus W., 1981, N HOLLAND MATH STUDI, V50

[5] Taniuti T., 1983, NONLINEAR WAVES

[6] TANIUTI T, 1974, SUPPL PROG THEOR PHY, V55