1. Cheng, C.S., Kao, M.H.: Optimal experimental designs for fMRI via circulant biased weighing designs. Ann. Stat. 43(6), 2565–2587 (2015)
2. Kao, M.H.: Hadamard matrices in fMRI Studies. Private communication (2015)
3. Kao, M.-H., Mandal, A., Stufken, J.: Optimal design for event-related functional magnetic resonance imaging considering both individual stimulus effects and pairwise contrasts. Stat. Appl. 6(1, 2), 235–256 (2008: New Series)
4. Kunert, J.: Optimality of balanced uniform repeated measurements designs. Ann. Stat. 12, 1006–1017 (1984)
5. Raghavarao, D.: Construction and Combinatorial problems in Design of Experiments. Wiley, New York (1971)