Referencias

Anders, E., y Grevesse, N. "Abundances of the Elements: Meteoritic and Solar." Geochimica et Cosmochimica Acta, vol. 53, nº 1, 1989, pp. 197–214.

Cox, P.A. The Elements: Their Origin, Abundance, and Distribution, Oxford University Press, Oxford, Reino Unido, 1989.

Kaye, G.W.C. y Laby, T.H Tables of physical and chemical constants, Longman, Londres, 15ª edición, 1993.