Witte, M. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Pryor, W., Stewart, I., Simmons, K., Witte, M., Ajello, J., Toskiba, K., et al. (2001). Remote sensing of H from ULYSSES and GALILEO. Space Science Reviews, 97, 393-399.