Bessa, A. D., Rocha-Neto, I. C., Pinho, S. T. R. de, Andrade, R. F. S., & Petit Lobao, T. C. (2012). Graph Cospectrality using Neighborhood Matrices. The Electronic Journal of Combinatorics, 19(3), P23. https://doi.org/10.37236/2617