W. Casaca, G. Taubin, and L. Nonato.
"Graph Laplacian for Spectral Clustering and Seeded Image Segmentation", in <em>Anais do XXVIII Concurso de Teses e Dissertações</em>, Recife, 2015, pp. 31-36, doi: <a href="https://doi.org/10.5753/ctd.2015.9998">https://doi.org/10.5753/ctd.2015.9998</a>.