@article {61957,
	title = {Raman investigations of Upper Cretaceous phosphorite and black shale from Safaga District, Red Sea, Egypt},
	journal = {Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy},
	volume = {118},
	year = {2014},
	pages = {42-47},
	attachments = {https://scholar.cu.edu.eg/sites/default/files/walidsamir/files/2014_ciobota_and_salama_et_al_spec._acta.pdf},
	author = {Valerian Ciobota˘, Walid Salama, Paul Vargas Jentzsch, Nicolae Tarcea, Petra R{\"o}sch, and Ahmed El Kammar, Rania S. Morsy, J{\"u}rgen Popp}
}
