The following publications are possibly variants of this publication:
- Group divisible designs with block size 4 where the group sizes are congruent to 2 mod 3R. Julian R. Abel, Thomas Britz, Yudhistira A. Bunjamin, Diana Combe. DM, 345(3):112740, 2022. [doi]
- GBRDs over supersolvable groups and solvable groups of order prime to 3R. Julian R. Abel, Diana Combe, Adrian M. Nelson, William D. Palmer. dcc, 69(2):189-201, 2013. [doi]
- Group divisible designs with block size 4 where the group sizes are congruent to 1 mod 3R. Julian R. Abel, Thomas Britz, Yudhistira A. Bunjamin, Diana Combe, Tao Feng 0002. DM, 346(4):113277, April 2023. [doi]