@book{21997,
	author = {Booth, R. S., ed. and Humphreys, E. M. L., ed.},
	title = {Cosmic Masers - from OH to Ho},
	publisher = {Cambridge University Press                                  },
	year = {2012},
	series = {IAU Symposium; no. 287},
	address = {Cambridge                                                   },
	url = {https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/issue/cosmic-masers-from-oh-to-h0/9408BACFC58C07E24172D3B91AF982EE}
}