1. Rigid motions in relativity

   • J. Martínez Salas
   • J. M. Gambí Fernández

   OriginalPaper Pages: 809 - 819

2. Discrete dynamical equations in Minkowski space

   • Jerzy Albrycht
   • Andrzej Marciniak

   OriginalPaper Pages: 821 - 830

3. Gravitational vacuum hypothesis and cosmology with variable particle number

   • K. P. Staniukovich
   • V. N. Melnikov
   • K. A. Bronnikov

   OriginalPaper Pages: 831 - 841

4. Geometroelectrodynamics

   • Matti Pitkanen

   OriginalPaper Pages: 843 - 879

5. Superrenormalizable quantum electrodynamics inn⩾4

   • Jerzy Rayski

   OriginalPaper Pages: 881 - 890