Röttger, J. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Röttger, J. (1994). Director's introduction. In S. Buchert, & T. van Eyken (Eds.), EISCAT Meetings 94/18, Proc. of the EISCAT Annual Review Meeting, Longyearbyen, Svalbard, Norway. Kiruna, Sweden: EISCAT Scientific Association.