Gaskell George, Einsiedel Edna, Hallman William, Priest Susanna Hornig, Jackson Jonathan, Olsthoorn Johannus
Methodology Institute, London School of Economics and Political Science, London WC2A 2AE, UK.
Science. 2005 Dec 23;310(5756):1908-9. doi: 10.1126/science.1119444.