Neighbor-preserving homomorphisms between projective ring planes Joseph C. FerrarFerdinand D. Veldkamp OriginalPaper Pages: 11 - 33
Erzeugung quadratischer Varietäten bei beliebiger Charakteristik Hans Havlicek OriginalPaper Pages: 41 - 57
The group of rotations of the sphere: Generators and relations C. F. Moppert OriginalPaper Pages: 59 - 65