Cacciatori, Sergio; Zanon, Daniela; Billo, Marco; Denef, Frederik; Fre, Pietro; Proeyen, Antoine Van; Van Proeyen, Antoine(Classical and Quantum Gravity, 1999)Link to Published Version
Grassi, Antonella; Denef, Frederik; Douglas, Michael R.; Florea, Bogdan; Kachru, Shamit(Advances in Theoretical and Mathematical Physics, 2005)Link to Published Version