Olav Lysne Tor Skeie Sven-Arne Reinemo Ingebjørg Theiss Layered Routing in Irregular Networks. 51-65 2006 17 IEEE Trans. Parallel Distrib. Syst. 1 http://doi.ieeecomputersociety.org/10.1109/TPDS.2006.12 db/journals/tpds/tpds17.html#LysneSRT06