Schlegel, K. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Link (Any fulltext)
Mikhailov, A., & Schlegel, K. (1998). Physical mechanism of strong negative storm effects in the daytime ionospheric F2 region observed with EISCAT. Annales Geophysicae, 16(5), 602-608.