@book{29322,
	author = {Perrott, Colin, ed.},
	title = {Ophthalmic Lens Design and Fabrication},
	publisher = {SPIE},
	year = {1991},
	series = {Proceedings of SPIE; V. 1529},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1529}
}