Bilel Derbel Cyril Gavoille David Peleg Laurent Viennot Local Computation of Nearly Additive Spanners. 176-190 2009 DISC http://dx.doi.org/10.1007/978-3-642-04355-0_20 conf/wdag/2009 db/conf/wdag/disc2009.html#DerbelGPV09