Directed Hamilton Cycles in Digraphs and Matching Alternating Hamilton Cycles in Bipartite Graphs

@article{Zhang2013DirectedHC,
  title={Directed Hamilton Cycles in Digraphs and Matching Alternating Hamilton Cycles in Bipartite Graphs},
  author={Zan-Bo Zhang and Xiaoyan Zhang and Xuelian Wen},
  journal={SIAM J. Discrete Math.},
  year={2013},
  volume={27},
  pages={274-289}
}