- Günter Riedewald, Peter Forbrig:
Software specification methods and attribute grammars. Acta Cybern. 8(1): 89-117 (1987) - Vu Duc Thi:
Strong dependencies and s-semilattices. Acta Cybern. 8(2): 195-202 (1987) - Ho Thuan:
Some remarks on the algorithm of Lucchesi and Osborn. Acta Cybern. 8(2): 191-193 (1987) - Sándor Vágvölgyi, Zoltán Fülöp:
An infinite hierarchy of tree transformations in the class NDR. Acta Cybern. 8(2): 153-168 (1987)