1. All 2-point-invariants of Einstein's Cylinder Universe

   • Walter Benz

   OriginalPaper Pages: 5 - 9

2. Schubert graphs, symmetric groups and flags of Boolean lattices

   • Marco Buratti

   OriginalPaper Pages: 10 - 22

3. A result about Leisenring points

   • Antonio Cossidente
   • Maria Pompea Di Melfi

   OriginalPaper Pages: 23 - 25

4. Philon lines in non-Euclidean planes

   • H. S. M. Coxeter
   • Jan van de Craats

   OriginalPaper Pages: 26 - 55

5. On the classification of polar spaces

   • Hans Cuypers
   • Peter Johnson
   • Antonio Pasini

   OriginalPaper Pages: 56 - 62

6. On collineation groups generated by Bol reflections

   • Martin Funk
   • Péter T. Nagy

   OriginalPaper Pages: 63 - 78

7. Endliche projektive Ebenen gerader Ordnung mit Polaritäten

   • Erich Glock

   OriginalPaper Pages: 79 - 85

8. Characterizations of regulus nets

   • Yutaka Hiramine
   • Norman L. Johnson

   OriginalPaper Pages: 86 - 108

9. Generalized euclidean and elliptic geometries, their connections and automorphism groups

   • Helmut Karzel
   • Silvia Pianta
   • Rotraut Stanik

   OriginalPaper Pages: 109 - 143

10. Generalized chen submanifolds

    • Shi -Jie Li
    • Chorng -Shi Houh

    OriginalPaper Pages: 144 - 156

11. Hyper-reguli

    • T. G. Ostrom

    OriginalPaper Pages: 157 - 166

12. Transformation of incidence structures and sharply multiply transitive permutation sets

    • Gloria Rinaldi

    OriginalPaper Pages: 167 - 173

13. On almost constant-type manifolds

    • Giovanni Battista Rizza

    OriginalPaper Pages: 174 - 183

14. Analagmatic cubics through quadratic involutive transformations (I)

    • Rubio Pablo

    OriginalPaper Pages: 184 - 205