A Mixture of the Exclusion Process and the Voter Model
  We consider a one-dimensional nearest-neighbor interacting particle system, which is a mixture of the simple exclusion process and the voter model. The state space is taken to be the countable set of the configurations that have a finite number of particles to the right of the origin and a finite number of empty sites to the left of it. We obtain criteria for the ergodicity and some other properties of this system using the method of Lyapunov functions. 
Vladimir Belitsky, Pablo A. Ferrari, Mikhail V. Menshikov, Serguei Yu.   Popov