1. The resotank, a new generator for microwaves;Allerding;Hochfrequenztech. u. Elektroakustik,1938
2. The shortest waves obtainable with vacuum tubes;Barkhausen;Physik. Z.,1920
3. Rippled wall and rippled stream amplifier;Birdsall;Proc. Inst. Radio Engrs.,1954
4. The resistive wall amplifier;Birdsall;Proc. Inst. Radio Engrs.,1953
5. The cavity magnetron;Boot;J. Inst. Elec. Engrs. (London) Pt. IIIA,1946