@article{10_37236_5451,
     author = {Pingge Chen and Zhousheng Mei and Suijie Wang},
     title = {Inversion formulae on permutations avoiding 321},
     journal = {The electronic journal of combinatorics},
     year = {2015},
     volume = {22},
     number = {4},
     doi = {10.37236/5451},
     zbl = {1326.05004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/5451/}
}