The Dirichlet-to-Neumann map

1. Faster convergence and higher accuracy for the Dirichlet-Neumann map
   J. Comput. Phys., vol. 228(7), pp. 2578-2586, 2009. (link)
   
   
2. On the evaluation of layer potentials close to their sources
   J. Comput. Phys., vol. 227(5), pp. 2899-2921, 2008. (link)
   [with Rikard Ojala]
   
   
3. Approximate inverse preconditioners for some large dense random electrostatic interaction matrices
   BIT Numer. Math., vol. 46(2), pp. 307-323, 2006. (link)
   
   
4. Laplace's equation and the Dirichlet-Neumann map: a new mode for Mikhlin's method
   J. Comput. Phys., vol. 202(2), pp. 391-410, 2005. (link)
   [with Eddie Wadbro]