@article{JAC_2008__27_1_a4,
     author = {Pan, Yeh-jong and Lu, Min-hsin and Weng, Chih-wen},
     title = {Triangle-free distance-regular graphs},
     journal = {Journal of Algebraic Combinatorics},
     pages = {23--34},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2008__27_1_a4/}
}