@article{JAC_2004__19_2_a3,
     author = {Terwilliger, Paul},
     title = {An inequality involving the local eigenvalues of a distance-regular graph},
     journal = {Journal of Algebraic Combinatorics},
     pages = {143--172},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2004__19_2_a3/}
}