Observation of the 'ANTPOT.11 N' ground state - Oliveira Junior, J. M.; Lepine-Szily, Alinka; Bohlen, Hans Gerhard; Ostrowski, A. N; Lichtenthaler Filho, Rubens; Di Pietro, Alessia F; Laird, Alison Monica; Lima, G. F; Maunoury, Laurent; Santos, François de Oliveira; Roussel-Chomaz, Patricia; Savajols, Hervé; et al. (Physical Review Letters, 2000)