Remarks on the Notion of Concurrency Relation in the Case of Systems. - Piotr W. Prószynski (FCT, 1981)

Petri Nets and Concurrency-Like Relations. - Piotr W. Prószynski (ICFPC, 1981)

The Core Concurrency. - Piotr W. Prószynski (ICCI, 1990)

On Operational Equivalence of COSY Programs. - Piotr W. Prószynski (ICCI, 1992)

The CSA Approach to Knowledge Representation in Neural Networks. - Eugeniusz Eberbach; Piotr W. Prószynski (ICCI, 1993)