Intersection and Linking Numbers in Oriented Matroids. - Paula Carvalho 002; António Guedes de Oliveira (Discret. Comput. Geom., 2004)

Spectra and Laplacian spectra of arbitrary powers of lexicographic products of graphs. - Nair Abreu; Domingos M. Cardoso; Paula Carvalho 002; Cybele T. M. Vinagre (Discret. Math., 2017)

Special Issue dedicated to Workshop on Graph Spectra, Combinatorics and Optimization (WGSCO2018), Aveiro, Portugal, January 2018. - Paula Carvalho 002; Sofia J. Pinheiro; Tatiana V. Tchemisova (Discret. Appl. Math., 2019)