@article{SLC_2018_80B_a76,
     author = {Angela Hicks and Marino Romero},
     title = {Delta {Operators} at q=1 and {Polyominoes}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {80B},
     year = {2018},
     url = {http://geodesic.mathdoc.fr/item/SLC_2018_80B_a76/}
}