@article {167122,
	title = {Optical Parametric Oscillator based on LIBO Crystal at degeneracy},
	journal = {Optics},
	volume = {172},
	year = {2018},
	pages = {340 - 346},
	author = {Ahmed A A Khlili and Mohamed Atta Khedr and Hisham A El - kolaly and Salah Hassabelnaby,}
}
