Manjhi PK. Method of Construction and Some Properties of 4-Row-Regular Circulant Partial Hadamard Matrices of Order \((k\times 2k)\). Comm. Math. Appl. [Internet]. 2022 Aug. 17 [cited 2025 Jun. 16];13(2):613-2. Available from: http://www.journals.rgnpublications.com/index.php/cma/article/view/1905