1. Combinatorial Theory;Hall,1967
2. Hadamard Matrices of Order 16;Hall;J. P. L. Research Summary No. 36-10. 1,1961
3. Note on the Mathieu group M12;Hall;Arch. Math.,1962
4. M. Hall, Jr., “Hadamard Matrices of Order 20,” J. P. L. Technical Report No. 32-761.
5. N. Ito, J. S. Leon, and J. Q. Longyeear, The 24-dimensional Hadamard matrices and their automorphism groups, unpublished.