A short proof of the VPN Tree Routing Conjecture on ring networks.

Fabrizio Grandoni Volker Kaibel Gianpaolo Oriolo Martin Skutella A short proof of the VPN Tree Routing Conjecture on ring networks. 361-365 2008 36 Oper. Res. Lett. 3 http://dx.doi.org/10.1016/j.orl.2007.10.008 db/journals/orl/orl36.html#GrandoniKOS08