1. Concurrency problem for Horn fragment of Girard's Linear Logic, Logical Foundation of Computer Science — St. Petersburg '94;Archangelsky,1994
2. Linear logic with fixed resources;Archangelsky;Ann. Pure Appl. Logic,1994
3. Computers and Intractability;Garey,1979
4. Proc. Internat. Conf. on Application and Theory of Petri Nets;Gehlot,1989