1. Rings whose additive endomorphisms are multiplicative

   • Sh. Feigelstock

   OriginalPaper Pages: 257 - 260

2. Ein system von funktionalgleichungen vom Verallgemeinerten Replikativitäts-Typ

   • H. -H. Kairies

   OriginalPaper Pages: 261 - 271

3. The tree number of a graph with a given girth

   • M. Truszczyński

   OriginalPaper Pages: 273 - 286

4. On an exponential-cosine functional equation

   • J. C. Parnami
   • H. Singh
   • H. L. Vasudeva

   OriginalPaper Pages: 287 - 297

5. Sur les déter-cubes et leurs applications aux systèmes linéaires de quadriques

   • L. Degoli

   OriginalPaper Pages: 299 - 316

6. Book reviews

   • B. M. Garay

   BookReview Pages: 317 - 320