%0 Journal Article
%A Bo  Ning
%A Mingqing Zhai
%T Counting substructures and eigenvalues. II: Quadrilaterals
%J The electronic journal of combinatorics
%D 2025
%V 32
%N 4
%U http://geodesic.mathdoc.fr/articles/10.37236/12725/
%R 10.37236/12725
%F 10_37236_12725