@book{8732,
	author = {Crossley, J. N. and Nerode, Anil and Nerode, Anil ; jt. auth.},
	title = {Combinatorial functions},
	publisher = {Springer-Verlag},
	year = {1974},
	series = {Ergebnisse der Mathematik und ihrer Grenzgebiete},
	address = {Berlin}
}