Makreski, P., Jovanovski, G., Runčevski, T. and Jaćimović, R. 2011. Simple and efficient method for detection of traces of rare earth elements in minerals by raman spectroscopy instrumentation. Macedonian Journal of Chemistry and Chemical Engineering. 30, 2 (Dec. 2011), 241–250. DOI:https://doi.org/10.20450/mjcce.2011.39.