Röttger, J. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Hall, C. M., Röttger, J., Kuyeng, K., Tsutsumi, M., Dyrland, M., & Chau, J. L. (2009). Polar mesospheric summer echoes at 78 degrees N, 16 degrees E, 2008: First results of the refurbished sounding system (SOUSY) Svalbard radar. Journal Geophysical Research, 114: D11111. doi:10.1029/2008JD011543.