Röttger, J. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Kelley, M. C., Farley, D. T., & Röttger, J. (1987). The effect of cluster ions on anomalous VHF backscatter from the summer polar mesosphere. Geophysical Research Letters, 14, 1031-1034.