Gani, Joseph2015-12-132015-12-130021-9002http://hdl.handle.net/1885/76289One of the standard methods for approximating a bivariate continuous-time Markov chain {X(t), Y(t): t ≥ 0}, which proves too difficult to solve in its original form, is to replace one of its variables by its mean, This leads to a simplified stochastic p20142015-12-11