Neiva, A. M. R. (2008). "Geochemistry of cassiterite and wolframite from tin and tungsten quartz in Portugal". Ore Geology Reviews (33): 221–238. doi:10.1016/j.oregeorev.2006.05.013. hdl:10316/3927.
Neiva, A. M. R. (2008). "Geochemistry of cassiterite and wolframite from tin and tungsten quartz in Portugal". Ore Geology Reviews (33): 221–238. doi:10.1016/j.oregeorev.2006.05.013. hdl:10316/3927.