Intrinsic properties for conservation laws and Lie-Bäcklund invariances of evolution equations L. AbellanasF. Guil OriginalPaper Pages: 257 - 263
Uniformly damped general coupled anharmonic oscillators and the coherent state representation S. K. BoseD. N. Tripathy OriginalPaper Pages: 265 - 273
Maxwell's equations in Segal's model: Solutions and their invariance M. CahenS. Gutt OriginalPaper Pages: 275 - 287
A classical particle in a Poincaré gauge field as a model for the gravitational interaction Riccardo GiachettiEmanuele SoraceRiccardo Ricci OriginalPaper Pages: 297 - 300
Casimir operators of the simplest supersymmetry superalgebras L. HlavatýJ. Niederle OriginalPaper Pages: 301 - 306
Nonlinear superposition for Liouville's equation in three spatial dimensions George Leibbrandt OriginalPaper Pages: 317 - 321
Quantized fields on the einstein static universe and Segal's theory of the redshift Jan Tarski OriginalPaper Pages: 329 - 337
On the similarity solution of evolution equation u t =H(x, t, u, u x , u xx , ...) G. Z. Tu OriginalPaper Pages: 347 - 355