1. Segmental Differential Approximation and the Black Box Problem;Bellman,1964
2. On the Identification of Systems and the Unscrambling of Data: Some Problems Suggested by Neurophysiology;Bellman,1964
3. Identification of Differential Systems with Time Varying Coefficients;Bellman,1964
4. On the identification of systems and the unscrambling of data: Some problems suggested by neurophysiology;Bellman,1964
5. A Note of Differential Approximation and Orthogonal Polynomials;Bellman,1963