Pinus, A.G. (ed.) et al., Algebra and model theory 5. Collection of papers from the 5th summer school “Intermediate problems of model theory and universal algebra”, Erlogol, Russia, June 26–July 1, 2005. Novosibirsk: Novosibirsk State Technical University (ISBN 5-7782-0551-1/pbk). 8-27 (2005).
Stefanescu, Mirela (ed.), Algebraic hyperstructures and applications. Proceedings of the fifth international congress, Iasi, Romania, July 4-10, 1993. Palm Harbor, FL: Hadronic Press. 223-229 (1994).