@article{SLC_2012-2015_67_a1,
     author = {Vladimir Dotsenko},
     title = {Pattern {Avoidance} in {Labelled} {Trees}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2012-2015},
     volume = {67},
     url = {http://geodesic.mathdoc.fr/item/SLC_2012-2015_67_a1/}
}