Konferenzbeitrag
Rybak, J.; Curdt, W.; Kucera, A.; Schühle, U.; Wöhl, H.: Chromospheric and transition region dynamics - Reasons and consequences of the long-period instrumental periodicities of SUMER/SOHO. In: Proc. 9th European Meeting on Solar Physics of EPS and EAS: Magnetic Fields and Solar Processes, Florence, Italy, 12-18 September 1999, S. 361 - 366 (Hg. Wilson, A.). ESA Publ. Div., Noordwijk (1999)