1. Generalizing a non-existence theorem in finite projective planes

   • Barbu C. Kestenband

   OriginalPaper Pages: 123 - 126

2. The mass centre, the gravity centre and their duals on the elliptic plane

   • Teodóra Wiegand

   OriginalPaper Pages: 127 - 137

3. On a problem of A. Pleijel

   • Benny N. Cheng

   OriginalPaper Pages: 139 - 145

4. Divisible designs and groups

   • Ralph-Hardo Schulz
   • Antonino Giorgio Spera

   OriginalPaper Pages: 147 - 157

5. Barth type vanishing theorems

   • A. Alzati

   OriginalPaper Pages: 159 - 168

6. The convex floating body of almost polygonal bodies

   • Cartest Schütt
   • Elisabeth Werner

   OriginalPaper Pages: 169 - 188

7. Affine locally symmetric surfaces

   • Włodzimierz Jelonek

   OriginalPaper Pages: 189 - 221

8. On the critical set for photogrammetric reconstruction using line tokens in P ₃(ℂ)

   • Thomas Buchanan

   OriginalPaper Pages: 223 - 232

9. Transformation of designs and other incidence structures

   • Pasquale Quattrocchi
   • Luigi Antonio Rosati

   OriginalPaper Pages: 233 - 240