Browne, Patrick, Ronan Egan, Fintan Hegarty, and Padraig Ó Catháin. “A Survey of the Hadamard Maximal Determinant Problem”. The Electronic Journal of Combinatorics 28, no. 4 (December 3, 2021): P4.41. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v28i4p41.