@book{24112,
	author = {Watkins, Wendell, ed.},
	title = {Characterization, Propagation, and Simulation of Sources and Backgrounds},
	publisher = {SPIE},
	year = {1991},
	series = {Proceedings of SPIE; V. 1486},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1486}
}