@article {10514,
	title = {Micro-Raman spectroscopy investigation of C3N4 crystals deposited on nickel substrates},
	journal = {Diamond and Related Materials},
	year = {1998},
	pages = {52-56},
	author = {T. Werninghaus and D.R.T. Zahn and E.G. Wang and Y. Chen}
}
