In: Software engineering - ESEC/FSE '97. 6th European software engineering conference held jointly with the 5th ACM SIGSOFT symposium on the foundations of software engineering. Proceedings. Zurich, 1997. ( Lecture notes in computer science 1301.).
On the reformulation of some classes of PNS-problems as set covering problems.(Working paper of the Laboratory of Operations Research and Decision Systems, (LORDS) WP 97-1.)