Some Issues in Noncommutative Solitons as D-branes
  We investigate and interpret a large class of soliton solutions found in noncommutative tachyon condensation. These constructions make extensive use of the idea that Dp-branes may be built out of lower dimensional branes. Finally we comment on a recently proposed solution generating technique. 
S. P. de Alwis, A. T. Flournoy