R. Chapman

Crystal heater supply utilizing controlled electron bombardment

D. L. Blair, R. Chapman, 1977 .

Versatile Wide Range Electron Current Regulator

R. Chapman, 1972 .

Instrumentation for Analog Differentiator at Low Frequencies

R. Chapman, 1969 .

Voltage multiplication circuit for starting uv source gas discharge lamps.

S. E. Moore, R. Chapman, 1979, The Review of scientific instruments.