| 125-134 | Les bimodules rélatifs. Bozapalides, Syméon |
| 135-140 | Weak homomorphisms of systems of equations. Chajda, Ivan |
| 141-147 | Isomorphic algebraic pre-closures and equivalent set-systems. Chvalina, Jan |
| 149-157 | On the structure of second-order periodic differential equations with given characteristic multipliers. Neuman, František; Staněk, Svatoslav |
| 159-167 | On structural properties of normality relations on lattices. Nieminen, Juhani |
| 169-174 | On varieties of non-indexed algebras. Polák, Libor |
| 175-180 | An oscillation criterion for a canonical form of third order linear differential equations. Tryhuk, Václav |