Francis AE, Humphries SP. Commutative Schur rings over symmetric groups II: The case n = 6. J. Algebra Comb. Discrete Struct. Appl. [Internet]. 2016 May 15 [cited 2026 Sep. 12];3(2):61-80. Available from: https://www.jacodesmath.com/index.php/jacodesmath/article/view/32