On a Measure of Complexity for Stochastic Sequential Machines - T. T. Nieh; Jack W. Carlyle (SWAT, 1968)

Stochastic Sequential Machines with Prescribed Performance Criteria - T. T. Nieh (Inf. Control., 1968)

On the Uniqueness of Minimal-State Stochastic Sequential Machines. - T. T. Nieh (IEEE Trans. Computers, 1970)