Stubbe, P. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Frolov, V. L., Erukhimov, L. M., Kagan, L. M., Komrakov, G. P., Sergeev, E. N., & Stubbe, P. (1998). Two-component nature of the broad up-shifted maximum in stimulated electromagnetic emission spectra. Physical Review Letters, 81, 1630-1633.