@book{18695,
	author = {Dupree, A. K and Workshop on Cool Stars,Stellar Systems and the Sun},
	title = {Cool stars,stellar systems and the sun},
	publisher = {Harvard-Smithsonian Center for Astrophysics},
	year = {1980},
	series = {Research in Space Science,SAO Special Report No.389},
	address = {Cambridge}
}