@book{29160,
	author = {Etemad, Shahab, ed.},
	title = {Nonlinear Optical Properties of Advanced Materials},
	publisher = {SPIE},
	year = {1993},
	series = {Proceedings of SPIE; V. 1852},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1852}
}