The orientation and symmetry of light spots and asterism in rose quartz spheres from Madagascar. Published in Journal of Gemmology, 2006.
Author(s): K. Schmetzer, M.S. Krzemnicki
A Raman investigation of the amblygonite-montebrasite series. Published in Canadian Mineralogist, 2006.
Author(s): B. Rondeau, E. Fritsch, P. Lefevre, M. Guiraud, A.-M. Fransolet, Y. Lulsac