Danziger, Peter, and Brett Stevens. “Class-Uniformly Resolvable Group Divisible Structures I: Resolvable Group Divisible Designs”. The Electronic Journal of Combinatorics 11, no. 1 (March 25, 2004): R23. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v11i1r23.