Refs.:
- Azevedo Da Silva, R.P. and Calvo, M. (1997). "Minéralogie (Panasqueira)." Bocamina, 12-27.
- De Ascencao Guedes, R. (2002). "Le coteau minier de Panasqueira, Beira Baixa (Portugal)." Le Règne Minéral(43), 6-32.
- Foxford, K.A. , Nicholson, R. and Polya, D.A. (1991). "Textural evolution of W-Cu-Sn bearing hydrothermal veins at Minas da Panasqueira, Portugal." Mineralogical Magazine, 55, 435-445.
For further refs., see also 'Panasqueira Mines'.