On a subclass of pseudopolynomial problems
In: Mathematical Foundations of Computer Science, Jg. 9, S. 414-4252009
On the "Fundamental Principle" of L. Ehrenpreis
In: Partial differential equations : papers presented at Stefan Banach International Math. Center at the semester "Partial differential equations" held Sept. 11 - Dec. 16, 1978 (Banach Center publications : 10), Jg. 1983, S. 185-2012009On transactions in logic programming languages
In: Logic programming : proceedings of the Eighth International Conference [on Logic Programming, held in Paris, France, June 24 - 28, 1991]2009