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Romania | |
| Hirtopanu Paulina, Andersen C. Jens, Fairhurst J. Robert and Jakab Gyula (2013) Allanite-(Ce) and its associations, from the Ditrau alkaline intrusive massif. Proc. Rom. Acad., Series B, 2013, 15(1), p. 59–74 |
| Hirtopanu, P., Bermanec, V., Udubasa, G., & Melgarejo, J. C. (2000). Monazite and Allanite from the Ditrau Alkaline Massif, East Carpathians, Romania. Anuarul Institutului Geologic al Romaniei, 72, 41. |