@Article{ Rieger.Zwicknagl:2014, author = {C.~Rieger and B.~Zwicknagl}, title = {Improved Exponential Convergence Rates by Oversampling Near the Boundary}, journal = {Constructive Approximation}, volume = {39(2)}, doi = {10.1007/s00365-013-9211-5}, pages = {323-341}, year = {2014} }