%0 Journal Article %A Mingqing Zhai %A Ruifang Liu %A Jie Xue %T A unique characterization of spectral extrema for friendship graphs %J The electronic journal of combinatorics %D 2022 %V 29 %N 3 %U http://geodesic.mathdoc.fr/articles/10.37236/11183/ %R 10.37236/11183 %F 10_37236_11183