Clemens Schwarzinger, M. Wildner, S. Ulatowski, M. Saywer,
"Vanadium-Bearing Tourmaline from the Commander Mine, Nadonjukin, Tanzania"
, in The Journal of Gemmology, Vol. 36, Nummer 6, Seite(n) 534-543, 2019, ISSN: 2632-1718
Original Titel:
Vanadium-Bearing Tourmaline from the Commander Mine, Nadonjukin, Tanzania