Gallardo LH. New Duality Operator for Complex Circulant Matrices and a Conjecture of Ryser. Electron. J. Combin. [Internet]. 2016Mar.18 [cited 2026Jun.1];23(1):#P1.59. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i1p59