Dalitz Analysis of D^+ to pi^+ pi^- pi^+
  Using 281/pb of data recorded by the CLEO-c detector observing e+e- collisions at the psi(3770), corresponding to 1.8 million D Dbar pairs, the substructure of the decay D+ to pi+ pi- pi+ is investigated using the Dalitz plot technique. The results presented in this document are preliminary. 
G. Bonvicini, et al, CLEO Collaboration