@article{10_37236_7472,
     author = {Ron M. Adin and Eli Bagno and Estrella Eisenberg and Shulamit Reches and Moriah Sigron},
     title = {On two-sided gamma-positivity for simple permutations},
     journal = {The electronic journal of combinatorics},
     year = {2018},
     volume = {25},
     number = {2},
     doi = {10.37236/7472},
     zbl = {1388.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/7472/}
}