Bäcklund transformations and new solutions of nonlinear wave equations in four-dimensional space-time R. L. AndersonA. O. BarutR. Rączka OriginalPaper Pages: 351 - 358
Generalization of the relativistic string model in the geometrical approach B. M. BarbashovV. V. NesterenkoA. M. Chervjakov OriginalPaper Pages: 359 - 365
The origin of the algebra of quantum operators in the stochastic formulation of quantum mechanics Mark Davidson OriginalPaper Pages: 367 - 376
Embedding quantum logics in Hilbert space Stanley P. GudderJohn R. Michel OriginalPaper Pages: 379 - 386
The lie algebra of invariant group of the KdV, MKdV, or Burgers equation Tu Gue-Zhang OriginalPaper Pages: 387 - 393
Generalized symmetries of nonlinear partial differential equations Yvette Kosmann-Schwarzbach OriginalPaper Pages: 395 - 404
Differential-difference evolution equations. II (Darboux transformation for the Toda lattice) V. B. MatveevM. A. Salle OriginalPaper Pages: 425 - 429
Bäcklund transformations for the generalized sine-gordon equation in 2+1 and 3+1 dimensions Ziemowit Popowicz OriginalPaper Pages: 431 - 436