Carriazo, D., Del Arco, M., García-López, E., Marcì, G., Martín, C., Palmisano, L. and Rives, V. (2011) Zn, Al hydrotalcites calcined at different temperatures: Preparation, characterization and photocatalytic activity in gas–solid regime. Journal of Molecular Catalysis A: Chemical, 342-343, 83-90.