Dalia Krieger Avery Miller Narad Rampersad Bala Ravikumar Jeffrey Shallit Decimations of languages and state complexity. 2401-2409 2009 410 Theor. Comput. Sci. 24-25 http://dx.doi.org/10.1016/j.tcs.2009.02.024 db/journals/tcs/tcs410.html#KriegerMRRS09