Thayse Christine S. Dias Gilberto F. de Sousa Filho Elder M. Macambira Lucidio dos Anjos F. Cabral Marcia Helena Costa Fampa An Efficient Heuristic for the Ring Star Problem. 24-35 2006 conf/wea/2006 WEA http://dx.doi.org/10.1007/11764298_3 db/conf/wea/wea2006.html#DiasFMCF06