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Regular graphs with four eigenvalues
van Dam, Edwin Robert, (1994)
Bounds on separated pairs of subgraphs, eigenvalues and related polynomials
van Dam, Edwin Robert, (1995)
Interlacing eigenvalues and graphs
Haemers, W.H., (1994)
Characterizing Distance-Regularity of Graphs by the Spectrum
van Dam, Edwin Robert, (2005)
On (v,k,labda) graphs and designs with trivial automorphism group
Bussemaker, F.C., (1987)
The Pseudo-Geometric Graphs for Generalised Quadrangles of Order (3,t)
Haemers, W.H., (2000)