G. Carneiro, Y. Fuchs, Stéphanie Rossano, H.A. Horn, J. Linares. Study of the causes of colour in four selected crystals of tourmaline from the pegmatite of Martinha in Divino de Laranjeras, M.G., Brasil.
4th International symposium on granitic pegmatite, Aug 2009, Recife, Brazil. pp.83-88.
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