- G. A. Kadir and J. D. Key, The Steiner system S(5,8,24) constructed from dual affine planes, Proc. Roy. Soc. Edinburgh Sect. A 103 (1986), no. 1-2, 147–160.[MR]
- Golala Abdulla Kadir, On the affine geometries of M24, PhD Thesis, University of Birmingham, 1984.