@book{33618,
	author = {Szalay, Alexander, ed.},
	title = {Virtual Observatories},
	publisher = {SPIE},
	year = {2002},
	series = {Proceedings of SPIE; V. 4846},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/4846}
}