Klemp, D. Abteilung Spektroskopie, MPI for biophysical chemistry, Max Planck Society;
Nickel, B. Abteilung Spektroskopie, MPI for biophysical chemistry, Max Planck Society;
Klemp, D., & Nickel, B. (1983). Phosphorescence and E-type delayed fluorescence from azulene in phenazine host crystals. Chemical Physics, 78(1), 17-28. doi:10.1016/0301-0104(83)87002-5.