DATE: 2013
AUTHORS: Violeta TSARKIRIS, Magdalena LUNGU, Elena ENESCU, Dan PAVELESCU, Gheorghe DUMITRESCU, Alexandru RADULIAN, Viorel BRAIC
PUBLISHED IN: Journal of Optoelectronics and Advanced Materials,Vol. 15, No. 9 – 10, September – October 2013, p. 1090 – 1094