Manjhi PK, Rana MK. Some Results on \(r\)-Row-Regular Circulant Partial Hadamard Matrices of Order \((k \times 2k)\). Comm. Math. Appl. [Internet]. 2022 May 23 [cited 2025 Jun. 16];13(1):129-36. Available from: http://www.journals.rgnpublications.com/index.php/cma/article/view/1734