@article{SLC_2016-2019_75_a7,
     author = {Ammar Amoud and Jean-Paul Bultel and Ali Chouria and Jean-Gabriel Luque and Olivier Mallet},
     title = {Word {Bell} {Polynomials}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {75},
     year = {2016-2019},
     url = {http://geodesic.mathdoc.fr/item/SLC_2016-2019_75_a7/}
}