@article{10_1017_S0017089508004540,
     author = {JORDAN, JONATHAN},
     title = {COMB {GRAPHS} {AND} {SPECTRAL} {DECIMATION}},
     journal = {Glasgow mathematical journal},
     pages = {71--81},
     year = {2009},
     volume = {51},
     number = {1},
     doi = {10.1017/S0017089508004540},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089508004540/}
}