E. Popovici, A. Bucci, R. P. Wiegand, and E. D. De Jong. Coevolutionary principles. In G. Rozenberg, T. Back, and J. N. Kok, editors, Handbook of Natural Computing, Theoretical Computer Science, pages 987–1033. Springer-Verlag, Berlin, 2012.
[[ a different version also published as: E. Popovici and K. De Jong. Understanding competitive co-evolutionary dynamics via fitness landscapes. In Late Breaking Papers of the Genetic and Evolutionary Computation Conference, 2004. ]]
M. Boicu, G. Tecuci, B. Stanescu, G. Balan, and E. Popovici. Ontologies and the knowledge acquisition bottleneck. In Proceedings of the Workshop on Ontologies and Information Sharing at the International Joint Conference on Artificial Intelligence. AAAI Press, 2001.