Singh, Poonam, Puja Thapliyal, and Veena Budharaja. “Construction of Minimum Level Change, Linear Trend Free Fractional Factorial Designs Using Projective Geometry”. Global Journal of Mathematics and Statistics 2, no. 1 (December 1, 2025): 97–107. Accessed April 18, 2026. https://bluemarkpublisher.com/index.php/GJME/article/view/511.