@article {gustafson2004decomposing, title = {Decomposing posterior variance}, journal = {Journal of statistical planning and inference}, volume = {119}, number = {2}, year = {2004}, pages = {311{\textendash}327}, publisher = {Elsevier}, doi = {10.1016/s0378-3758(02)00491-3}, author = {Gustafson, P. and Clarke, B.} }