@book{21943,
	author = {Bothmer, V., ed. and Hady, A. A., ed.},
	title = {Solar Activity and its Magnetic Origin},
	publisher = {Cambridge University Press                                  },
	year = {2006},
	series = {IAU symposium; no. 233},
	address = {Cambridge                                                   },
	url = {https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/issue/4B4FEE57625034951CC19E95BC947D18}
}