In this paper, we find six new weighing matrices of order \( 2n \) and weight \( 2n-9 \) constructed from two circulants, by establishing various patterns on the locations of the nine zeros in a potential solution.
Tlias S. Kotsireas, Christos Koukouvinos, Jennifer Seberry. New weighing matrices of order \(2n\) and weight \(2n -9\)[J], Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 072. 49-54. DOI: .