The following publications are possibly variants of this publication:
- Approximate distance oracles for geometric spannersJoachim Gudmundsson, Christos Levcopoulos, Giri Narasimhan, Michiel H. M. Smid. TALG, 4(1), 2008. [doi]
- Approximate distance oracles for graphs with dense clustersMattias Andersson, Joachim Gudmundsson, Christos Levcopoulos. comgeo, 37(3):142-154, 2007. [doi]
- Approximate Distance Oracles for Graphs with Dense ClustersMattias Andersson, Joachim Gudmundsson, Christos Levcopoulos. isaac 2004: 53-64 [doi]