The possibility was considered of detecting the selective averaging of spin packets in the vicinity of coincidence of the electron paramagnetic resonance signals associated with transitions of Gd3+ dipole centers due to orientational relaxation.

Influence of Interacting Resonances on the Electron Paramagnetic Resonance Spectrum of Gd3+ Dipole Centers in Fluorites. V.A.Vazhenin, V.B.Guseva, M.Y.Artemov, A.P.Potapov: Physics of the Solid State, 2005, 47[8], 1454-6