@article{JAC_1993__2_2_a3,
     author = {Gr\"abe, Hans-Gert},
     title = {Two remarks on independent sets},
     journal = {Journal of Algebraic Combinatorics},
     pages = {137--145},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_1993__2_2_a3/}
}