Philippe Dumas, Helger Lipmaa, Johan Wallén. Asymptotic behaviour of a non-commutative rational series with a nonnegative linear representation.
Discrete Mathematics and Theoretical Computer Science, DMTCS, 2007, Vol. 9 no. 1 (1), pp.247--272.
⟨10.46298/dmtcs.399⟩.
⟨hal-00966501⟩