Colbourn CJ, Keranen MS, Kreher DL. The 3-GDDs of type $g^3u^2$. J. Algebra Comb. Discrete Struct. Appl. [Internet]. 2016 Sep. 15 [cited 2026 Sep. 12];3(3):135-44. Available from: https://jacodesmath.com/index.php/jacodesmath/article/view/41