Optimal Controlled teleportation via several kinds of three-qubit states
  The probability of successfully controlled teleportating an unknown qubit using a general three-particle state is investigated. We give the analytic expressions of maximal probabilities of successfully controlled teleportating an unknown qubit via several kinds of tripartite states including a tripartite GHZ state and a tripartite W-state. 
Ting Gao, Feng-Li Yan, and You-Cheng Li