The Spectra Boax
 Buku Teks
Spectra of graphs
Andries E. Brouwer
[Springer, ], 2012
 eBooks
In defense of filtering
 Artikel Jurnal
Cvetkovic, Dragos M.
Spectra of graphs: theory and applications
Academic Press, 1979
 Buku Teks
Bernath, Peter F.
Spectra of atoms and molecules
Oxford University Press, 1995
 Buku Teks