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- [3] A LINEAR CURRENT-FREQUENCY CONVERTER FOR ION PUMP CURRENT READOUT REVIEW OF SCIENTIFIC INSTRUMENTS, 1970, 41 (08): : 1254 - &
- [9] WIDE-RANGE LINEAR OR EXPONENTIAL FREQUENCY CONTROL OF AN ASTABLE MULTIVIBRATOR ELECTRONIC ENGINEERING, 1973, 45 (549): : 13 - 13