@article{10_37236_1678,
     author = {Vincent R. Vatter},
     title = {Permutations avoiding two patterns of length three},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     number = {2},
     doi = {10.37236/1678},
     zbl = {1024.05005},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1678/}
}