Michel Latteux Aurélien Lemay Yves Roos Alain Terlutte Identification of biRFSA languages. 212-223 2006 356 Theor. Comput. Sci. 1-2 http://dx.doi.org/10.1016/j.tcs.2006.01.029 db/journals/tcs/tcs356.html#LatteuxLRT06