Quaternionic analysis on Riemann surfaces and differential geometry. Pedit, Franz; Pinkall, Ulrich — 1998 Documenta Mathematica
Examples of infinite dimensional isoparametric submanifolds. Ulrich Pinkall; Gudlaugur Thorgergsson — 1990 Mathematische Zeitschrift
Discrete isothermic surfaces. Ulrich Pinkall; Alexander Bobenko — 1996 Journal für die reine und angewandte Mathematik
On the Geometry of Affine Immersions. Katsumi Nomizu; Ulrich Pinkall — 1987 Mathematische Zeitschrift
A canonical metric for Möbius structures and its applications. Ravi S. Kulkarni; Ulrich Pinkall — 1994 Mathematische Zeitschrift