[1] Huybrechts W J. Internal excited state of the optical polaron [J]. J. Phys. C, 1997, 10: 3761-3968.
[2] Zhou H Y, Gu S W, Shi Y M. Effects of strong coupling magnetopolaron in quantum dot [J]. Mod. Phys. Lett. B, 1998, 12(17): 693-701.
[3] Kandemir B S, Cetin A. Ground- and first-excited state energies of impurity magnetopolaron in an anisotropic quantum dot [J]. Phys. Rev. B, 2002, 65(5): 054303-1-11.