Relativistic properties of marginal distributions
  We study the properties of marginal distributions-projections of the phase space representation of a physical system-under relativistic transforms. We consider the Galileo case as well as the Lorentz transforms exploiting the relativistic oscillator model used for describing the mass spectrum of elementary particles. 
Stefano Mancini and Paolo Tombesi (Univ. Camerino, Italy) Vladimir I.   Man'ko (Lebedev Physical Institute, Russia)