The concept was first identified by Richard R. Muntz[1] and further developed by Frank Kelly.
[2][3] Quasireversibility differs from reversibility in that a stronger condition is imposed on arrival rates and a weaker condition is applied on probability fluxes.
[5] Quasireversibility had been conjectured to be a necessary condition for a product form solution in a queueing network, but this was shown not to be the case.
Chao et al. exhibited a product form network where quasireversibility was not satisfied.
is quasireversible if its state at time t, x(t) is independent of for all classes of customer.