Two Theorems on the Range of Strategy-proof Rules on a Restricted Domain
  Let g be a strategy-proof rule on the domain NP of profiles where no alternative Pareto-dominates any other and let g have range S on NP. We complete the proof of a Gibbard-Satterthwaite result - if S contains more than two elements, then g is dictatorial - by establishing a full range result on two subdomains of NP. 
Donald E. Campbell, Jerry S. Kelly
math.CO