Gupta, Himanshu, Allen Herman, Alice Lacaze-Masmonteil, Roghayehi Maleki, and Karen Meagher. 2026. “On the Second Largest Eigenvalue of Certain Graphs in the Perfect Matching Association Scheme”. The Electronic Journal of Combinatorics 33 (3), #P3.39. https://doi.org/10.37236/15092.