Cruse, H., Bartling, C., & Kindermann, T. (1995). High-pass filtered positive feedback for decentralized control of cooperation. In F. Moran, A. Moreno, J. J. Merelo, & P. Chacon (Eds.), Lecture Notes in Artificial Intelligence: Vol. 929. Advances in Artificial Life. Third European Conference on Artificial Life Granada, Spain, June 4-6, 1995 Proceedings (pp. 668-678). Berlin; New York: Springer.