@article{SLC_1984_10_a11,
     author = {Daniel I. A. Cohen},
     title = {Counting {Stable} {Sets} in {Trees}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {10},
     year = {1984},
     url = {http://geodesic.mathdoc.fr/item/SLC_1984_10_a11/}
}