Global Differential Geometry and Global AnalysisDirk Ferus, Ulrich Pinkall, Udo Simon, Berd Wegner · First published 2006Open the Tome
Global Differential Geometry and Global Analysis 1984Dirk Ferus, Robert B. Gardner, Sigurdur Helgason, Udo Simon · First published 2006Open the Tome
Conformal Geometry of Surfaces in S4 and QuaternionsFrancis E. Burstall, Dirk Ferus, Katrin Leschke, Franz Pedit, Ulrich Pinkall · First published 2004Open the Tome
Totale Absolutkrümmung in Differentialgeometrie und -TopologieDirk Ferus · First published 1968Open the Tome
