Evers, Jörg Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;
Li, Y., Evers, J., Feng, W., & Zhu, S.-Y. (2013). Spectrum of collective spontaneous emission beyond the rotating-wave approximation. Physical Review A, 87(5): 053837, pp. 1-11. doi:10.1103/PhysRevA.87.053837.