Hartmann, G. K., Richards, M. L., Degenhardt, W., Jarchow, C., Song, S., Hartogh, P., Umlauft, G., Boogaerts, W., & Schmid, M.(1997). Millimeter Wave atmospheric Sounder (MAS) Follow-on (MPAE-T-015-97-23). Katlenburg-Lindau, Germany: Max-Planck-Institut für Aeronomie.