The main aims of the series of volumes "Advances in Petri
Nets" are:
- to present to the "outside" scientific community a fair
picture of recent advances in the area of Petri nets, and
- to encourage those interested in the applications and the
theory of concurrent systems to take a closer look at Petri
nets and then join the group of researchers working in this
fascinating and challenging area.
This volume is based on the proceedings of the 12th
International Conference on Applications and Theory of Petri
Nets, held in Gjern, Denmark, in June 1991. It contains 18
selected and revised papers covering all aspects of recent
Petri net research.