Bartholdi L., “Branch rings, thinned rings, tree enveloping rings”, Israel Journal of Mathematics, 154 (2006), 93–139
Kambites M., Silva P.V., Steinberg B., “The spectra of lamplighter groups and Cayley machines”, Geometriae Dedicata, 120:1 (2006), 193–227
Grigorchuk R., Sunik Z., “Asymptotic aspects of Schreier graphs and Hanoi Towers Groups”, Comptes Rendus Mathematique, 342:8 (2006), 545–550
Bartholdi L., Sidki S.N., “The automorphism tower of groups acting on rooted trees”, Transactions of the American Mathematical Society, 358:1 (2006), 329–358
Bartholdi L., “Lie algebras and growth in branch groups”, Pacific Journal of Mathematics, 218:2 (2005), 241–282
Bartholdi L., Woess W., “Speetral computations on lamplighter groups and Diestel–Leader graphs”, Journal of Fourier Analysis and Applications, 11:2 (2005), 175–202
Nekrashevych V.V., “Cuntz–Pimsner algebras of group actions”, Journal of Operator Theory, 52:2 (2004), 223–249
Sabot C., “Electrical networks, symplectic reductions, and application to the renormalization map of self-similar lattices”, Fractal Geometry and Applications: a Jubilee of Benoit Mandelbrot - Analysis, Number Theory, and Dynamical Systems, Proceedings of Symposia in Pure Mathematics, 72, no. 1, 2004, 155–205
Grigorchuk R.I., Zuk A., “The Ihara zeta function of infinite graphs, the KNS spectral measure and integrable maps”, Random Walks and Geometry, 2004, 141–180
Bartholdi L., Grigorchuk R., Nekrashevych V., “From fractal groups to fractal sets”, Fractals in Graz 2001: Analysis - Dynamics - Geometry - Stochastics, Trends in Mathematics, 2003, 25–118