@book{24199,
	author = {Hartwick, Thomas, ed.},
	title = {CO2 Laser Devices and Applications},
	publisher = {SPIE},
	year = {1980},
	series = {Proceedings of SPIE; V. 0227},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/0227}
}