Linear vs. nonlinear algorithms for linear problems. - Jakob Creutzig; Przemyslaw Wojtaszczyk (J. Complex., 2004)

Approximation of SalphaS Lévy processes in Lp norm. - Jakob Creutzig (J. Approx. Theory, 2006)

Free-knot spline approximation of stochastic processes. - Jakob Creutzig; Thomas Müller-Gronbach; Klaus Ritter 001 (J. Complex., 2007)

Infinite-Dimensional Quadrature and Approximation of Distributions. - Jakob Creutzig; Steffen Dereich; Thomas Müller-Gronbach; Klaus Ritter 001 (Found. Comput. Math., 2009)