Jedwab, Jonathan, Shuxing Li, and Samuel Simon. “Constructions and Restrictions for Balanced Splittable Hadamard Matrices”. The Electronic Journal of Combinatorics 30, no. 1 (February 24, 2023): P1.37. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v30i1p37.