@article{10_37236_403,
     author = {Xiaojing Chen and Wenchang Chu},
     title = {Enumeration of restricted permutation triples},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/403},
     zbl = {1264.05003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/403/}
}