ISBN 0521420067 books & textbook
The Sun as a Variable Star: Solar and Stellar Irradiance Variations
Pap, J. M. Frvhlich, C. Hudson, H. S. Solanki, S. K.
Cambridge University Press /1994-10-28 Hardcover / 379 Pages
isbn-10: 0521420067 / isbn-13: 9780521420068