1. Delay Networks Having Maximally-Flat Frequency Characteristics;Thomson,1949
2. Networks with Maximally-Flat Delay;Thomson;Wireless Engineer,1952
3. Synthesis of Constant-Time-Delay Ladder Networks Using Bessel Polynomials;Storch,1954
4. Automatic Feedback Control System Synthesis;Truxal,1955
5. Synthesis of Transfer Functions with Poles Restricted to the Negative Real Axis;Weinberg;J. Appl. Phys.,1953