Key points are not available for this paper at this time.
The theory of electron-phonon interaction shifting of the cyclotron and thermal masses is extended to include a d-c magnetic field in Frohlich's Hamiltonian, obtaining the h-f conductivity. Landau's theory of Fermi liquids was applied to see the effect of the Coulomb interaction of electrons. (R.E.U.)
Nakajima et al. (Thu,) studied this question.