References
Chrystopher L. Nehaniv
with Egri-Nagy, A. (2015)., Computational understanding and manipulation of symmetries, in M. Randall (ed.), Artificial life and computational intelligence, Dordrecht, Springer, pp. 17-30.
with Egri-Nagy, A. , Dini, P. (2010)., Transformation semigroups as constructive dynamical spaces, in F. Basile Colugnati (ed.), Digital ecosystems, Dordrecht, Springer, pp. 245-265.