@article{10_37236_467,
     author = {Hiu-Fai Law},
     title = {On the number of independent sets in a tree},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/467},
     zbl = {1189.05135},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/467/}
}