Ralf Klasing, Adrian Kosowski, Alfredo Navarra. Taking Advantage of Symmetries: Gathering of many Asynchronous Oblivious Robots on a Ring.
Theoretical Computer Science, Elsevier, 2010, 411 (34--36), pp.3235--3246.
⟨10.1016/j.tcs.2010.05.020⟩.
⟨hal-00519069⟩