| 171-193 | Stability of abstract differential equations with the right-hand side smooth in the time variable. Barták, Jaroslav |
| 194-198 | The maximal regular ideal of the semigroup of binary relations. Hardy, D.; Pastijn, Francis J. |
| 199-205 | Congruences on conventional semigroups. Masat, Francis E. |
| 206-217 | Prime selectors in lattice-ordered groups. Martinez, Jorge |
| 218-228 | Homopolar circuits in polar graphs. Andersen, Lars Døvling; Grant, Douglas D. |
| 229-240 | On quasi-Riemannian fiber manifold. Dekrét, Anton |
| 241-274 | A Cauchy type condition and integrability. Steib, Michael Lee |
| 275-288 | Multivalued mappings and Filippov's operation. Jarník, Jiří |
| 289-300 | Bifurcations and biological observables. Rosen, Robert |
| 301-305 | Decomposition of isometries of isotropic $U_n(V)$ over finite fields into simple isometries. Ishibashi, Hiroyuki |
| 306-313 | On value selectors and torsion classes of lattice ordered groups. Jakubík, Ján |
| 314-321 | Semi-continuity and weak-continuity. Noiri, Takashi |
| 322-324 | On Segal's postulates for general quantum mechanics. Alda, Václav |
| 325-337 | Prime selectors and torsion classes of lattice ordered groups. Jakubík, Ján |
| 338-339 | Academician Štefan Schwarz awarded the 1980 National Prize of the Slovak Socialist Republic. Mišík, Ladislav |