Source:
Journal of the Royal Statistical Society: Series A (Statistics in Society); Oct2007, Vol. 170 Issue 4, p1061-1078, 18p, 1 Diagram, 3 Charts, 1 Graph
Source:
Journal of the Royal Statistical Society: Series A (Statistics in Society); Jul2006, Vol. 169 Issue 3, p439-457, 19p, 1 Diagram, 3 Charts, 2 Graphs