Piecewise linear test functions for stability and instability of queueing networks.

Douglas G. Down Sean P. Meyn Piecewise linear test functions for stability and instability of queueing networks. 205-226 1997 27 Queueing Syst. 3-4 http://dx.doi.org/10.1023/A:1019166115653 db/journals/questa/questa27.html#DownM97