Contact transformations and conformal group. III. Finite nonrelativistic transformations José M. Cerveró OriginalPaper Pages: 333 - 337
Contact transformations. IV. Contraction of contact Lie algebras José M. Cerveró OriginalPaper Pages: 339 - 343
A few properties of a certain class of degenerate space-times Jerzy K. KowalczyńskiJerzy F. Plebański OriginalPaper Pages: 357 - 370
Metric and Ricci tensors for a certain class of space-times ofD type Jerzy K. KowalczyńskiJerzy F. Plebański OriginalPaper Pages: 371 - 388
SO(4, 2)-covariant formulation of the Bargmann-Wigner equations Eric A. Lord OriginalPaper Pages: 389 - 399