Hagfors, T. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Isham, B., & Hagfors, T. (1993). Observations of the temporal and spatial development of induced and natural plasma lines during HF modification experiments at Arecibo using chirped incoherent scatter radar. Journal Geophysical Research, 98(A8), 13605-13625.