SzymaƄska, MH;    Keeling, J;    Littlewood, PB;      (2006)    Nonequilibrium quantum condensation in an incoherently pumped dissipative system.                   Physical Review Letters , 96  (23)    , Article 230602.  10.1103/PhysRevLett.96.230602 <https://doi.org/10.1103/PhysRevLett.96.230602>.       Green open access