@article{Wood2000,
author = {Wood, S.N.},
title= {Modelling and smoothing parameter estimation with multiple quadratic penalties},
year = {2000},
doi = {10.1111/1467-9868.00240},
journal = {Journal of the Royal Statistical Society: Series B (Statistical Methodology)},
volume = {62},
number = {2},
pages = {413--428},
}