Doppler-adaptive multipath window tracking for WCDMA FDD-uplink. - Ingolf Held; Oliver Klein (VTC Spring, 2002)

Approximation algorithms for the Earth mover's distance under transformations using reference points. - Oliver Klein; Remco C. Veltkamp (EuroCG, 2005)

Approximation Algorithms for Computing the Earth Mover's Distance Under Transformations. - Oliver Klein; Remco C. Veltkamp (ISAAC, 2005)

Shape Matching With Reference Points (Geometrische Mustererkennung mit Hilfe von Referenzpunkten) - Oliver Klein (2008)