@book{21950,
	author = {Hartkopf , William I., ed. and Guinan, E. F., ed.},
	title = {Binary stars as critical tools and tests in contemporary astrophysics                                                   },
	publisher = {Cambridge University Press                                  },
	year = {2007},
	series = {IAU Symposium; no. 240},
	address = {Cambridge                                                   },
	url = {https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/issue/D9C2BE4735BC5FEC431534EBD524A80C}
}