You seem to be attempting to access an item that has been removed from the repository.
There is a later version of the item you are trying to access:
Reshetnyak, V.Yu., Shelestiuk, S.M. and Sluckin, T.J. (2006) Fredericksz transition threshold in nematic liquid crystals filled with ferroelectric nano-particles. Molecular Crystals and Liquid Crystals, 454, 603-608. (doi:10.1080/15421400600654108).