Jf. Yao et Jg. Attali, ON STABILITY OF NONLINEAR AR MODELS WITH MARKOV SWITCHING, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 327(6), 1998, pp. 593-596
For a nonlinear autoregressive model with Markov switching, we give co
nditions for: (A) the existence and the uniqueness of a stationary erg
odic solution; (B) the existence of moments of such a stationary solut
ion, (C) a strong law of large numbers for a large class of unbounded
functions. (C) Academie des Sciences/Elsevier, Paris.