Gauged extended supergravity without cosmological constant: no-scale   structure and supersymmetry breaking
  We consider the interplay of duality symmetries and gauged isometries of supergravity models giving N-extended, spontaneously broken supergravity with a no-scale structure. Some examples, motivated by superstring and M-theory compactifications are described. 
L. Andrianopoli, R. D'Auria, S. Ferrara, M. A. Lledo