Space-Charge Limitations on the Focus of Electron Beams

Authors: Thompson, B.J., Headrick, L.B.

Source: Proceedings of the IRE Proc. IRE Proceedings of the IRE. 28(7):318-324 Jul, 1940

Development of Cathode-Ray Tubes for Oscillographic Purposes

Authors: Orth, R.T., Richards, P.A., Headrick, L.B.

Source: Proceedings of the Institute of Radio Engineers Proc. Inst. Radio Eng. Radio Engineers, Proceedings of the Institute of. 23(11):1308-1323 Nov, 1935