Manjhi, Pankaj Kumar, and Mahendra Kumar Rana. “Some Results on \(r\)-Row-Regular Circulant Partial Hadamard Matrices of Order \((k \times 2k)\)”. Communications in Mathematics and Applications 13, no. 1 (May 23, 2022): 129–136. Accessed May 7, 2024. http://www.rgnpublications.com/journals/index.php/cma/article/view/1734.