Transkription:
ÖHMAN, [Karl] Yngve
Sstron.
Se: Stockholms observatoriums annaler. Set.
Bd 20. Nr 3. Solar flares observed at the Swedish astrophysical station
in Anacapri in the year 1956. 1957.
(20:3 jämte senare nr.: Kat. 1958-.
Stockholms observatoriums annaler.)