Schwenn, R. Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society; MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Volkmer, P. M., Neubauer, F. M., & Schwenn, R. (1982). Observation of flare-generated shock waves by Helios-2 near the sun. Space Science Reviews, 32, 131-144.