The local unitary equivalence of multipartite pure states
  In this paper, we give a method for the local unitary equivalent problem which is more efficient than that was proposed by Bin Liu $et \ al$ \cite{bliu}. 
Yan-Ling Wang, Mao-Sheng Li, Shao-Ming Fei, Zhu-Jun Zheng
quant-ph math-ph math.MP