1. The electron-wave tube—A novel method of generation and amplification of microwave energy;Haeff;Proc. IRE,1949
2. Analysis of a simple model of a two-beam growing-wave tube;Nergaard;RCA Rev.,1948
3. Double-stream amplifiers;Pierce;Proc. IRE,1949
4. A new type of high-frequency amplifier;Pierce;Bell System Tech. J.,1949
5. Transmission-line analog of a modulated electron beam;Bloom;RCA Rev.,1954