D. Lengyel-Frey
S. T. Wu
Robert M. Schoch
John E. Nealy
International Astronomical Union. Colloquium
Symposium on High Energy Phenomena on the Sun (1972 Goddard Space Flight Center)
Vahe Petrosian
W. T. Roberts
Étienne Léopold Trouvelot
Unknown Author
Ludwig Oster
Annibale Riccò
HESP Science Study Group.
M. E. Machado
Kinsey A. Anderson
COSPAR. Plenary Meeting. Symposium 2.
Stephen G. Benka