Supersymmetric Fivebrane Solitons
  We study the conditions for the fivebrane worldvolume theory in D=11 to admit supersymmetric solitons with non-vanishing self-dual three-form. We construct some new soliton solutions consisting of ``superpositions'' of calibrated surfaces, self-dual strings and instantons. 
Jerome P. Gauntlett, Neil D. Lambert and Peter C. West