et. al., Ameen Saheb Sk,. “Combinatorial Construction of Second Order Rotatable Designs”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 10 (April 28, 2021): 4602–4605. Accessed May 6, 2024. https://www.turcomat.org/index.php/turkbilmat/article/view/5205.