Energy distribution of the Einstein-Klein-Gordon system for a static   spherically symmetric spacetime in (2+1)-dimensions
  We use Moeller's energy-momentum complex in order to explicitly compute the energy and momentum density distributions for an exact solution of Einstein's field equations with a negative cosmological constant minimally coupled to a static massless scalar field in a static, spherically symmetric background in (2+1)-dimensions. 
I. Radinschi and Th. Grammenos