Asymptotic behavior of form factors and invariant description of the spatial structure of particles

Invariant description of the particle spatial distribution is introduced on the basis of relativistic configurational representation obtained with the aid of expansions over unitary representations of the Lorentz group. A formula which gives the correct “almost dipole” asymptotical behaviour of the proton form-factor $\displaystyle{F_P(t)\to\frac{\ln |t|/M^2}{t^2}}$ at large $-t$ is obtained.