The Dehn invariants of the Bricard octahedra Victor Alexandrov OriginalPaper 15 June 2011 Pages: 1 - 13
Translations in affine Klingenberg spaces T. BisztriczkyJ. W. Lorimer OriginalPaper 23 June 2011 Pages: 15 - 42
On a problem of Croft on optimally nested regular polygons S. J. DilworthS. R. Mane OriginalPaper 10 June 2011 Pages: 43 - 66
The defect in an invariant reflection structure Helmut KarzelMario MarchiSilvia Pianta OriginalPaper 17 November 2010 Pages: 67 - 87
Tangent segments and orthogonality types in normed planes Horst MartiniSenlin Wu OriginalPaper 15 June 2011 Pages: 89 - 100
On operators associated with tensor fields Arif Salimov OriginalPaper 14 December 2010 Pages: 107 - 145
Eine geometrische Kennzeichnung der reellen absoluten Ebenen Eberhard M. Schröder OriginalPaper 15 June 2011 Pages: 147 - 165
Erratum to: On operators associated with tensor fields Arif Salimov Erratum 12 July 2011 Pages: 179 - 181