@article{10_37236_1719,
     author = {Jian Shen},
     title = {Short cycles in digraphs with local average outdegree at least two},
     journal = {The electronic journal of combinatorics},
     year = {2003},
     volume = {10},
     doi = {10.37236/1719},
     zbl = {1023.05082},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1719/}
}