Periodic Fluctuations in the Solar Transition Zone Bruner, E. C., Jr. ; Chipman, E. G. ; Shine, R. A. ; Lites, B. W. ; Rottman, G. J. ; Orrall, F. Q. ; Athay, R. G. ; White, O. R. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1976 Bibcode: 1976BAAS....8Q.313B