@book{25799,
	author = {Lewandowski, Ronald, ed.},
	title = {Helmet- and Head-Mounted Displays and Symbology Design Requirements},
	publisher = {SPIE},
	year = {1994},
	series = {Proceedings of SPIE; V. 2218},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2218}
}