Smith, R.J., King, P.J., Lotya, M., Wirtz, C., Khan, U., De, S., O’Neill, A., Duesberg, G.S., Grunlan, J.C., Moriarty, G., Chen, J., Wang, J.Z., Minett, A.I., Nicolosi, V. and Coleman, J.N. (2011) Large-scale exfoliation of inorganic layered compounds in aqueous surfactant solutions. Advanced Materials, 23, 3944-3948.