The connected components of the induced graphs on each subconstituent of the dual polar graph of the odd dimensional orthogonal spaces over a finite field are shown to be amply regular. The connected components of the graphs on the second and third subconstituents are shown to be distance-regular by elementary methods. © 2006 Elsevier B.V. All rights reserved.
Li, F. G., & Wang, Y. X. (2006). A class of amply regular graphs related to the subconstituents of a dual polar graph. Discrete Mathematics, 306(22), 2909–2915. https://doi.org/10.1016/j.disc.2006.05.022