1.
Wocjan P, Elphick C. Spectral Lower Bounds for the Orthogonal and Projective Ranks of a Graph. Electron. J. Combin. [Internet]. 2019Aug.30 [cited 2026May15];26(3):#P3.45. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v26i3p45