@article{10_37236_671,
     author = {Jiang Zhou and Changjiang Bu and Jihong Shen},
     title = {Some results for the periodicity and perfect state transfer},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {1},
     doi = {10.37236/671},
     zbl = {1229.05205},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/671/}
}