@book{24456,
	author = {Fischer, Robert, ed.},
	title = {Current Developments in Optical Design and Engineering VII},
	publisher = {SPIE},
	year = {1998},
	series = {Proceedings of SPIE; V. 3429},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/3429}
}