1. A regularity lemma and twins in words;Axenovich;J. Comb. Theory, Ser. A,2013
2. Graph Theory;Bondy,2008
3. Spectra of Graphs;Brouwer,2011
4. Using twins and scaling to construct cospectral graphs for the normalized Laplacian;Butler;Electron. J. Linear Algebra,2015
5. Skew-adjacency matrices of graphs;Cavers;Linear Algebra Appl.,2012