Hughston, L P. 2001. A Novel Approach to Quantum Gravity. In: L J Mason; L P Hughston; P K Kobak and K Pulverer, eds. Further Advances in Twistor Theory, Volume III: Curved Twistor Spaces. London: Chapman & Hall/CRC Press, 367 - 369. ISBN 1584880473 [Book Section]

Mason, L J; Hughston, L P; Kobak, P K and Pulverer, K, eds. 2001. Further Advances in Twistor Theory, Volume III: Curved Twistor Spaces. London: Chapman & Hall/CRC Press. ISBN 1584880473 [Edited Book]