00665nam a2200157Ia 4500 260420b |||||||| |||| 00| 0 eng d 530.1 Su955.TG Summer School on Mathematical Problems of Quantum Field Theory, Primorsko, Bulgaria, Sept. 1980 21280 Twister geometry and non-linear systems ; review lectures given at the 4th Bulgarian summer school / Berlin: Springer-Verlag, 1982 iv, 216p. Lecture notes in Mathematics 970 21281 Doebner, H. D. editor. 21282 Palev, T. D. editor. 21283 ddc BK 0 0 0 530_100000000000000_SU955_TG 0 20654 ISI ISI 1998-10-12 0 530.1 Su955.TG DP18455 2019-02-14 00:00:00 BK 16949 16949