@book{29063,
	author = {Mal, Ajit, ed.},
	title = {Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware IV},
	publisher = {SPIE},
	year = {2000},
	series = {Proceedings of SPIE; V. 3994},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/3994}
}