Affine geometry over free unitary modules Werner LeißnerRainer SeverinKlaus Wolf OriginalPaper Pages: 101 - 120
The geometrical structure in a generic generating space of a non-developable generalized ruled surface in the hyperbolic space Hm Charles Thas OriginalPaper Pages: 131 - 146
Co-isotropic submanifolds of a para-Cokählerian manifold with concircular structure vector field Klaus BuchnerRadu Rosca OriginalPaper Pages: 164 - 177
Incidence structures of affine and protective types Paola BiondiNicola Melone OriginalPaper Pages: 178 - 191