H. Specht

On the morphology of auroral-zone X-ray events—III. Large-scale observations in the midnight-to-morning sector

G. Maral, P. Tanskanen, G. Kremser, 1973 .

On the morphology of auroral-zone X-ray events—I Dynamics of midnight events

K. Saeger, P. Tanskanen, G. Kremser, 1971 .

Temporal Variations of Solar Particle Spectra (August 4–7, 1972)

E. Kirsch, G. Pfotzer, G. Kremser, 1974 .

Aerosol measurements at the Algarve coast of Portugal

M. Schmidt, P. Fabian, H. Specht, 1978 .

Energetic solar-proton precipitation in the auroral zone associated with storm sudden commencements

K. Saeger, E. Kirsch, G. Kremser, 1977 .