Graeme Fairweather Andreas Karageorghis Yiorgos Sokratis Smyrlis A matrix decomposition MFS algorithm for axisymmetric biharmonic problems. 55-71 2005 23 Adv. Comput. Math. 1-2 http://dx.doi.org/10.1007/s10444-004-1808-6 db/journals/adcm/adcm23.html#FairweatherKS05