Allem, L. E., A. Cafure, E. Dratman, L. N. Grippo, M. D. Safe, and V. Trevisan. “Partial Characterization of Graphs Having a Single Large Laplacian Eigenvalue”. The Electronic Journal of Combinatorics, Vol. 25, no. 4, Dec. 2018, p. P4.65, doi:10.37236/7342.